1# Copyright (c) 1983 Eric P. Allman 2# Copyright (c) 1988 The Regents of the University of California. 3# All rights reserved. 4# 5# %sccs.include.redist.sh% 6# 7# @(#)READ_ME 8.34 (Berkeley) 12/11/93 8# 9 10This directory contains the source files for sendmail. 11 12For detailed instructions, please read the document ../doc/op.me: 13 14 eqn ../doc/op.me | pic | ditroff -me 15 16The Makefile is for the new (4.4BSD) Berkeley make, available from 17ftp.uu.net in the directory /systems/unix/bsd-sources/usr.bin/make. 18(Paul Southworth <pauls@umich.edu> published a description of porting 19this make in comp.unix.bsd.) This Makefile has assumptions about the 204.4 file system layout built in. 21 22There is also a Makefile.dist which is much less clever, but works on 23the old traditional make. You can use this using: 24 25 make -f Makefile.dist 26 27There are a bunch of other Makefiles for other systems -- these are 28the ones that I use, they have "Berkeley quirks" in them, and I don't 29guarantee that they will work unmodified in your environment. However, 30they are all designed for the old make and can be used to help you get 31started. They have names like "Makefile.HPUX". Many of them include 32-I/usr/sww/include/db and -L/usr/sww/lib -- this is Berkeley's 33location for the new database libraries, described below. You don't 34have to remove these definitions if you don't have these directories. 35 36There is also a shell script (makesendmail) that tries to be clever 37about using object subdirectories. It's pretty straightforward, and 38may help if you share a source tree among different architectures. 39 40************************************************************************** 41** IMPORTANT: DO NOT USE OPTIMIZATION (``-O'') IF YOU ARE RUNNING ** 42** GCC 2.4.x or 2.5.x. THERE IS A BUG IN THE GCC OPTIMIZER THAT ** 43** CAUSES SENDMAIL COMPILES TO FAIL MISERABLY. ** 44************************************************************************** 45 46Jim Wilson of Cygnus believes he has found the problem -- it will 47probably be fixed in GCC 2.5.6 -- but until this is verified, be 48very suspicious of gcc -O. 49 50************************************************************************** 51** IMPORTANT: Read the appropriate paragraphs in the section on ** 52** ``Operating System and Compile Quirks''. ** 53************************************************************************** 54 55 56+----------------------+ 57| DATABASE DEFINITIONS | 58+----------------------+ 59 60There are several database formats that can be used for the alias files 61and for general maps. When used for alias files they interact in an 62attempt to be back compatible. 63 64The three options are NEWDB (the new Berkeley DB package), NDBM (the 65older DBM implementation -- the very old V7 implementation is no 66longer supported), and NIS (Network Information Services). Used alone 67these just include the support they indicate. [If you are using NEWDB, 68get the latest version from FTP.CS.Berkeley.EDU in /ucb/4bsd. DO NOT 69use the version from the Net2 distribution! However, if you are on 70BSD/386 or 386BSD-based systems, use the one that already exists 71on your system. You may need to define OLD_NEWDB to do this.] 72 73If NEWDB and NDBM are defined (but not NIS), then sendmail will read 74NDBM format alias files, but the next time a newaliases is run the 75format will be converted to NEWDB; that format will be used forever 76more. This is intended as a transition feature. [Note however that 77the NEWDB library also catches and maps NDBM calls; you will have to 78back out this feature to get this to work. See ``Quirks'' section 79below for details.] 80 81If all three are defined, sendmail operates as described above, and also 82looks for the file /var/yp/Makefile. If it exists, newaliases will 83build BOTH the NEWDB and NDBM format alias files. However, it will 84only use the NEWDB file; the NDBM format file is used only by the 85NIS subsystem. 86 87If NDBM and NIS are defined (regardless of the definition of NEWDB 88or the existance of /var/yp/Makefile), sendmail adds the special 89tokens "YP_LAST_MODIFIED" and "YP_MASTER_NAME", both of which are 90required if the NDBM file is to be used as an NIS map. 91 92All of -DNEWDB, -DNDBM, and -DNIS are normally defined in the DBMDEF 93line in the Makefile. 94 95 96+---------------+ 97| COMPILE FLAGS | 98+---------------+ 99 100Whereever possible, I try to make sendmail pull in the correct 101compilation options needed to compile on various environments based on 102automatically defined symbols. Some machines don't seem to have useful 103symbols availble, requiring the following compilation flags in the 104Makefile: 105 106SOLARIS Define this if you are running Solaris 2.0 or higher. 107SOLARIS_2_3 Define this if you are running Solaris 2.3 or higher. 108NeXT Define this if you are on a NeXT box. (This one may 109 be pre-defined for you.) There are other hacks you 110 have to make -- see below. 111_AIX3 Define this if you are IBM AIX 3.x. 112RISCOS Define this if you are running RISC/os from MIPS. 113_SCO_unix_ Define this if you are on SCO UNIX. 114_SCO_unix_4_2 Define this if you are on SCO Open Server 3.2v4. 115 116If you are a system that sendmail has already been ported to, you 117probably won't have to touch these. But if you are porting, you may 118have to tweak the following compilation flags in conf.h in order to 119get it to compile and link properly: 120 121SYSTEM5 Adjust for System V. 122SYS5SIGNALS Use System V signal semantics -- the signal handler 123 is automatically dropped when the signal is caught. 124 If this is not set, use POSIX/BSD semantics, where the 125 signal handler stays in force until an exec or an 126 explicit delete. Implied by SYSTEM5. 127SYS5SETPGRP Use System V setpgrp() semantics. Implied by SYSTEM5. 128HASFLOCK Set this if you prefer to use the flock(2) system call 129 rather than using fcntl-based locking. Fcntl locking 130 has some semantic gotchas, but many vendor systems 131 also interface it to lockd(8) to do NFS-style locking. 132 For this reason, this should not be set unless you 133 don't have an alternative. 134HASUNAME Set if you have the "uname" system call. Implied by 135 SYSTEM5. 136HASUNSETENV Define this if your system library has the "unsetenv" 137 subroutine. 138HASSTATFS Define this if you have the statfs(2) system call. It's 139 not a disaster to get this wrong -- but you do lose the 140 queue free space code. 141HASUSTAT Define this if you have the ustat(2) system call. It's 142 not a disaster to get this wrong -- but you do lose the 143 queue free space code. 144HASSETSID Define this if you have the setsid(2) system call. This 145 is implied if your system appears to be POSIX compliant. 146HASINITGROUPS Define this if you have the initgroups(3) routine. 147HASSETVBUF Define this if you have the setvbuf(3) library call. 148 If you don't, setlinebuf will be used instead. This 149 defaults on if your compiler defines __STDC__. 150HASSETREUID Define this if you have setreuid(2) ***AND*** root can 151 use setreuid to change to an arbitrary user. This second 152 condition is not satisfied on AIX 3.x. You may find that 153 your system has setresuid(2), (for example, on HP-UX) in 154 which case you will also have to #define setreuid(r, e) 155 to be the appropriate call. Some systems (such as Solaris) 156 have a compatibility routine that doesn't work properly, 157 but may have "saved user ids" properly implemented so you 158 can ``#define setreuid(r, e) seteuid(e)'' and have it work. 159 The important thing is that you have a call that will set 160 the effective uid independently of the real or saved uid 161 and be able to set the effective uid back again when done. 162 There's a test program in ../test/t_setreuid.c that will 163 try things on your system. Setting this improves the 164 security, since sendmail doesn't have to read .forward 165 and :include: files as root. There are certain attacks 166 that may be unpreventable without this call. 167HASLSTAT Define this if you have symbolic links (and thus the 168 lstat(2) system call). This improves security. Unlike 169 most other options, this one is on by default, so you 170 need to #undef it in conf.h if you don't have symbolic 171 links (these days everyone does). 172GIDSET_T The type of entries in a gidset passed as the second 173 argument to getgroups(2). Historically this has been an 174 int, so this is the default, but some systems (such as 175 IRIX) pass it as a gid_t, which is an unsigned short. 176 This will make a difference, so it is important to get 177 this right! However, it is only an issue if you have 178 group sets. 179SLEEP_T The type returned by the system sleep() function. 180 Defaults to "unsigned int". Don't worry about this 181 if you don't have compilation problems. 182ARBPTR_T The type of an arbitrary pointer -- defaults to "void *". 183 If you are an very old compiler you may need to define 184 this to be "char *". 185LA_TYPE The type of load average your kernel supports. These 186 can be LA_SUBR (4) if you have the getloadavg(3) routine, 187 LA_MACH (5) to use MACH-style load averages (calls 188 processor_set_info()), LA_FLOAT (3) if you read kmem and 189 interpret the value as a floating point number, LA_INT (2) 190 to interpret as a long integer, or LA_SHORT (6) to 191 interpret as a short integer. These last three have 192 several other parameters that they try to divine: the 193 name of your kernel, the name of the variable in the 194 kernel to examine, the number of bits of precision in 195 a fixed point load average, and so forth. In desparation, 196 use LA_ZERO (1) -- it always returns the load average as 197 "zero" (and does so on all architectures). The actual 198 code is in conf.c -- it can be tweaked if you are brave. 199ERRLIST_PREDEFINED 200 If set, assumes that some header file defines sys_errlist. 201 This may be needed if you get type conflicts on this 202 variable -- otherwise don't worry about it. 203WAITUNION The wait(2) routine takes a "union wait" argument instead 204 of an integer argument. This is for compatibility with 205 old versions of BSD. 206SCANF You can set this to extend the F command to accept a 207 scanf string -- this gives you a primitive parser for 208 class definitions -- BUT it can make you vulnerable to 209 core dumps if the target file is poorly formed. 210SYSLOG_BUFSIZE You can define this to be the size of the buffer that 211 syslog accepts. If it is not defined, it assumes a 212 1024-byte buffer. If the buffer is very small (under 213 256 bytes) the log message format changes -- each 214 e-mail message will log many more messages, since it 215 will log each piece of information as a separate line 216 in syslog. 217 218 219+-----------------------+ 220| COMPILE-TIME FEATURES | 221+-----------------------+ 222 223There are a bunch of features that you can decide to compile in, such 224as selecting various database packages and special protocol support. 225Several are assumed based on other compilation flags -- if you want to 226"un-assume" something, you probably need to edit conf.h. Compilation 227flags that add support for special features include: 228 229NDBM Include support for "new" DBM library for aliases and maps. 230 Normally defined in the Makefile. 231NEWDB Include support for Berkeley "db" package (hash & btree) 232 for aliases and maps. Normally defined in the Makefile. 233NIS Define this to get NIS (YP) support for aliases and maps. 234 Normally defined in the Makefile. 235USERDB Include support for the User Information Database. Implied 236 by NEWDB in conf.h. 237IDENTPROTO Define this as 1 to get IDENT (RFC 1413) protocol support. 238 This is assumed unless you are running on Ultrix or 239 HP-UX, both of which have a problem in the UDP 240 implementation. You can define it to be 0 to explicitly 241 turn off IDENT protocol support. 242MIME Include support for MIME-encapsulated error messages. 243LOG Set this to get syslog(3) support. Defined by default 244 in conf.h. You want this if at all possible. 245NETINET Set this to get TCP/IP support. Defined by default 246 in conf.h. You probably want this. 247NETISO Define this to get ISO networking support. 248SMTP Define this to get the SMTP code. Implied by NETINET 249 or NETISO. 250NAMED_BIND Define this to get DNS (name daemon) support, including 251 MX support. The specs you must use this if you run 252 SMTP. Defined by default in conf.h. 253QUEUE Define this to get queueing code. Implied by NETINET 254 or NETISO; required by SMTP. This gives you other good 255 stuff -- it should be on. 256DAEMON Define this to get general network support. Implied by 257 NETINET or NETISO. Defined by default in conf.h. You 258 almost certainly want it on. 259MATCHGECOS Permit fuzzy matching of user names against the full 260 name (GECOS) field in the /etc/passwd file. This should 261 probably be on, since you can disable it from the config 262 file if you want to. Defined by default in conf.h. 263SETPROCTITLE Try to set the string printed by "ps" to something 264 informative about what sendmail is doing. Defined by 265 default in conf.h. 266 267 268+---------------------+ 269| DNS/RESOLVER ISSUES | 270+---------------------+ 271 272Many systems have old versions of the resolver library. At a minimum, 273you should be running BIND 4.8.3; older versions may compile, but they 274have known bugs that should give you pause. 275 276Common problems in old versions include "undefined" errors for 277dn_skipname. 278 279Some people have had a problem with BIND 4.9; it uses some routines 280that it expects to be externally defined such as strerror(). It may 281help to link with "-l44bsd" to solve this problem. 282 283!PLEASE! be sure to link with the same version of the resolver as 284the header files you used -- some people have used the 4.9 headers 285and linked with BIND 4.8 or vice versa, and it doesn't work. 286Unfortunately, it doesn't fail in an obvious way -- things just 287subtlely don't work. 288 289 290+-------------------------------------+ 291| OPERATING SYSTEM AND COMPILE QUIRKS | 292+-------------------------------------+ 293 294GCC 2.5.x problems *** IMPORTANT *** 295 Date: Mon, 29 Nov 93 19:08:44 PST 296 From: wilson@cygnus.com (Jim Wilson) 297 Message-Id: <9311300308.AA04608@cygnus.com> 298 To: kenner@vlsi1.ultra.nyu.edu 299 Subject: [cattelan@thebarn.com: gcc 2.5.4-2.5.5 -O bug] 300 Cc: cattelan@thebarn.com, rms@gnu.ai.mit.edu, sendmail@cs.berkeley.edu 301 302 This fixes a problem that occurs when gcc 2.5.5 is used to compile 303 sendmail 8.6.4 with optimization on a sparc. 304 305 Mon Nov 29 19:00:14 1993 Jim Wilson (wilson@sphagnum.cygnus.com) 306 307 * reload.c (find_reloads_toplev): Replace obsolete reference to 308 BYTE_LOADS_*_EXTEND with LOAD_EXTEND_OP. 309 310 *** clean-ss-931128/reload.c Sun Nov 14 16:20:01 1993 311 --- ss-931128/reload.c Mon Nov 29 18:52:55 1993 312 *************** find_reloads_toplev (x, opnum, type, ind 313 *** 3888,3894 **** 314 force a reload in that case. So we should not do anything here. */ 315 316 else if (regno >= FIRST_PSEUDO_REGISTER 317 ! #if defined(BYTE_LOADS_ZERO_EXTEND) || defined(BYTE_LOADS_SIGN_EXTEND) 318 && (GET_MODE_SIZE (GET_MODE (x)) 319 <= GET_MODE_SIZE (GET_MODE (SUBREG_REG (x)))) 320 #endif 321 --- 3888,3894 ---- 322 force a reload in that case. So we should not do anything here. */ 323 324 else if (regno >= FIRST_PSEUDO_REGISTER 325 ! #ifdef LOAD_EXTEND_OP 326 && (GET_MODE_SIZE (GET_MODE (x)) 327 <= GET_MODE_SIZE (GET_MODE (SUBREG_REG (x)))) 328 #endif 329 330 331SunOS 4.x (Solaris 1.x) 332 You may have to use -lresolv on SunOS. However, beware that 333 this links in a new version of gethostbyname that does not 334 understand NIS, so you must have all of your hosts in DNS. 335 336 Some people have reported problems with the SunOS version of 337 -lresolv and/or in.named, and suggest that you get a newer 338 version. The symptoms are delays when you connect to the 339 SMTP server on a SunOS machine or having your domain added to 340 addresses inappropriately. There is a version of BIND 341 version 4.9 on gatekeeper.DEC.COM in pub/BSD/bind/4.9. 342 343 There is substantial disagreement about whether you can make 344 this work with resolv+, which allows you to specify a search-path 345 of services. Some people report that it works fine, others 346 claim it doesn't work at all (including causing sendmail to 347 drop core when it tries to do multiple resolv+ lookups for a 348 single job). I haven't tried resolv+, as we use DNS exclusively. 349 350 Should you want to try resolv+, it is on ftp.uu.net in 351 /networking/ip/dns. 352 353Solaris 2.x (SunOS 5.x) 354 To compile for Solaris, be sure you use -DSOLARIS. 355 356 From a correspondent: 357 358 For solaris 2.2, I have 359 360 hosts: files dns 361 362 in /etc/nsswitch.conf and /etc/hosts has to have the fully 363 qualified host name. I think "files" has to be before "dns" 364 in /etc/nsswitch.conf during bootup. 365 366 To the best of my knowledge, Solaris does not have the 367 gethostbyname problem described above. 368 369 The Solaris "syslog" function is apparently limited to something 370 about 90 characters because of a kernel limitation. If you have 371 source code, you can probably up this number. The syslogd patch 372 is included in kernel jumbo patch for Solaris 2.2 as of revision 373 -39 or so. At least one person is running with patch 100999-45 374 and their long lost sendmail logging is finally showing up. 375 376OSF/1 377 If you are compiling on OSF/1 (DEC Alpha), you must use 378 -non_shared (otherwise it core dumps on startup). You may also 379 need -mld to get the nlist() function, although some versions 380 apparently don't need this. 381 382 Also, the enclosed makefile removed /usr/sbin/smtpd; if you need 383 it, just create the link to the sendmail binary. 384 385NeXT 386 If you are compiling on NeXT, you will have to create an empty 387 file "unistd.h" and create a file "dirent.h" containing: 388 389 #include <sys/dir.h> 390 #define dirent direct 391 392 (The Makefile.NeXT should try to do both of these for you.) 393 394 Apparently, there is a bug in getservbyname on Nextstep 3.0 395 that causes it to fail under some circumstances with the 396 message "SYSERR: service "smtp" unknown" logged. You should 397 be able to work around this by including the line: 398 399 OOPort=25 400 401 in your .cf file. 402 403 You may have to use -DNeXT. 404 405BSDI (BSD/386) 1.0, NetBSD 0.9, FreeBSD 1.0 406 The "m4" from BSDI won't handle the config files properly. 407 I haven't had a chance to test this myself. 408 409 The M4 shipped in FreeBSD and NetBSD 0.9 don't handle the config 410 files properly. One must use either GNU m4 1.1 or the PD-M4 411 recently posted in comp.os.386bsd.bugs (and maybe others). 412 NetBSD-current includes the PD-M4 (as stated in the NetBSD file 413 CHANGES). 414 415 FreeBSD 1.0 RELEASE has uname(2) now. Use -DUSEUNAME in order to 416 use it (look into Makefile.FreeBSD). NetBSD-current may have 417 it too but it has not been verified. 418 419 You cannot port the latest version of the Berkeley db library 420 and use it with sendmail without recompiling the world. This 421 is because C library routines use the older version which have 422 incompatible header files -- the result is that it can't read 423 other system files, such as /etc/passwd, unless you use the 424 new db format throughout your system. You should normally just 425 use the version of db supplied in your release. You may need 426 to use -DOLD_NEWDB to make this work -- this turns off some 427 new interface calls (for file locking) that are not in older 428 versions of db. You'll get compile errors if you need this 429 flag and don't have it set. 430 4314.3BSD 432 If you are running a "virgin" version of 4.3BSD, you'll have 433 a very old resolver and be missing some header files. The 434 header files are simple -- create empty versions and everything 435 will work fine. For the resolver you should really port a new 436 version (4.8.3 or later) of the resolver; 4.9 is available on 437 gatekeeper.DEC.COM in pub/BSD/bind/4.9. If you are really 438 determined to continue to use your old, buggy version (or as 439 a shortcut to get sendmail working -- I'm sure you have the 440 best intentions to port a modern version of BIND), you can 441 copy ../contrib/oldbind.compat.c into src and add 442 oldbind.compat.o to OBJADD in the Makefile. 443 444Linux 445 From: Karl London <karl@borg.demon.co.uk> 446 Subject: Little bit to add to a readme for Linux for 8.6 447 Date: Fri, 10 Sep 1993 20:16:05 +0100 (BST) 448 449 Below is a copy of a section of the /usr/include/unistd.h from 450 linux libc-4.4.1 which needs changing because of a bug in the 451 header files. Should be fixed for future releases.. 452 453 Karl 454 455 The #if 0 and #endif are new!! 456 457 ------- 458 459 If OPTS begins with `--', then non-option arguments 460 are treated as arguments to the option '\0'. 461 This behavior is specific to the GNU `getopt'. */ 462 #if 0 463 extern int getopt __P ((int __argc, char *__const * __argv, 464 __const char *__opts)); 465 #endif 466 extern int opterr; 467 extern int optind; 468 469A/UX 470 Date: Tue, 12 Oct 1993 18:28:28 -0400 (EDT) 471 From: "Eric C. Hagberg" <hagberg@med.cornell.edu> 472 Subject: Fix for A/UX ndbm 473 474 I guess this isn't really a sendmail bug, however, it is something 475 that A/UX users should be aware of when compiling sendmail 8.6. 476 477 Apparently, the calls that sendmail is using to the ndbm routines 478 in A/UX 3.0.x contain calls to "broken" routines, in that the 479 aliases database will break when it gets "just a little big" 480 (sorry I don't have exact numbers here, but it broke somewhere 481 around 20-25 aliases for me.), making all aliases non-functional 482 after exceeding this point. 483 484 What I did was to get the gnu-dbm-1.6 package, compile it, and 485 then re-compile sendmail with "-lgdbm", "-DNDBM", and using the 486 ndbm.h header file that comes with the gnu-package. This makes 487 things behave properly. 488 489 I suppose porting the New Berkeley db package is another route, 490 however, I made a quick attempt at it, and found it difficult 491 (not easy at least); the gnu-dbm package "configured" and 492 compiled easily. 493 494DG/UX 495 Apparently, /bin/mail doesn't work properly for delivery on 496 DG/UX -- the person who has this working, Douglas Anderson 497 <dlander@afterlife.ncsc.mil>, used procmail instead. 498 499DELL SVR4 500 Date: Mon, 06 Dec 1993 10:42:29 EST 501 From: "Kimmo Suominen" <kim@grendel.lut.fi> 502 Message-ID: <2d0352f9.lento29@lento29.UUCP> 503 To: eric@cs.berkeley.edu 504 Cc: sendmail@cs.berkeley.edu, "Kimmo Suominen" <kim@grendel.lut.fi> 505 Subject: Notes for DELL SVR4 506 507 Eric, 508 509 Here are some notes for compiling Sendmail 8.6.4 on DELL SVR4. I ran 510 across these things when helping out some people who contacted me by 511 e-mail. 512 513 1) Use gcc 2.4.5 (or later?). Dell distributes gcc 2.1 with their 514 Issue 2.2 Unix. It is too old, and gives you problems with 515 clock.c, because sigset_t won't get defined in <sys/signal.h>. 516 This is due to a problematic protection rule in there, and is 517 fixed with gcc 2.4.5. 518 519 2) If you don't use the new Berkeley DB (-DNEWDB), then you need 520 to add "-lc -lucb" to the libraries to link with. This is because 521 the -ldbm distributed by Dell needs the bcopy, bcmp and bzero 522 functions. It is important that you specify both libraries in 523 the given order to be sure you only get the BSTRING functions 524 from the UCB library (and not the signal routines etc.). 525 526 3) Don't leave out "-lelf" even if compiling with "-lc -lucb". 527 The UCB library also has another copy of the nlist routines, 528 but we do want the ones from "-lelf". 529 530 If anyone needs a compiled gcc 2.4.5 and/or a ported DB library, they 531 can use anonymous ftp to fetch them from lut.fi in the /kim directory. 532 They are copies of what I use on grendel.lut.fi, and offering them 533 does not imply that I would also support them. I have sent the DB 534 port for SVR4 back to Keith Bostic for inclusion in the official 535 distribution, but I haven't heard anything from him as of today. 536 537 - gcc-2.4.5-svr4.tar.gz (gcc 2.4.5 and the corresponding libg++) 538 - db-1.72.tar.gz (with source, objects and a installed copy) 539 540 Cheers 541 + Kim 542 -- 543 * Kimmo.Suominen@lut.fi * SysVr4 enthusiast at GRENDEL.LUT.FI * 544 * KIM@FINFILES.BITNET * Postmaster and Hostmaster at LUT.FI * 545 * + 358 200 865 718 * Unix area moderator at NIC.FUNET.FI * 546 547 548Non-DNS based sites 549 This version of sendmail always tries to connect to the Domain 550 Name System (DNS) to resolve names, regardless of the setting 551 of the `I' option. On most systems that are not running DNS, 552 this will fail quickly and sendmail will continue, but on some 553 systems it has a long timeout. If you have this problem, you 554 will have to recompile without NAMED_BIND. Some people have 555 claimed that they have successfully used "OI+USEVC" to force 556 sendmail to use a virtual circuit -- this will always time out 557 quickly, but also tells sendmail that a failed connection 558 should requeue the message (probably not what you intended). 559 A future release of sendmail will correct this problem. 560 561Both NEWDB and NDBM 562 If you use both -DNDBM and -DNEWDB, you must delete the module 563 ndbm.o from libdb.a and delete the file "ndbm.h" from the files 564 that get installed (that is, use the OLD ndbm.h, not the new 565 ndbm.h). This compatibility module maps ndbm calls into DB 566 calls, and breaks things rather badly. 567 568GNU getopt 569 I'm told that GNU getopt has a problem in that it gets confused 570 by the double call. Use the version in conf.c instead. 571 572 573+--------------+ 574| MANUAL PAGES | 575+--------------+ 576 577The manual pages have been written against the -mandoc macros 578instead of the -man macros. The latest version of groff has them 579included. You can also get a copy from FTP.UU.NET in directory 580/systems/unix/bsd-sources/share/tmac. 581 582 583+-----------------------------+ 584| DESCRIPTION OF SOURCE FILES | 585+-----------------------------+ 586 587The following list describes the files in this directory: 588 589Makefile The makefile used here; this version only works with 590 the new Berkeley make. 591Makefile.dist A trimmed down version of the makefile that works with 592 the old make. 593READ_ME This file. 594TRACEFLAGS My own personal list of the trace flags -- not guaranteed 595 to be particularly up to date. 596alias.c Does name aliasing in all forms. 597arpadate.c A subroutine which creates ARPANET standard dates. 598clock.c Routines to implement real-time oriented functions 599 in sendmail -- e.g., timeouts. 600collect.c The routine that actually reads the mail into a temp 601 file. It also does a certain amount of parsing of 602 the header, etc. 603conf.c The configuration file. This contains information 604 that is presumed to be quite static and non- 605 controversial, or code compiled in for efficiency 606 reasons. Most of the configuration is in sendmail.cf. 607conf.h Configuration that must be known everywhere. 608convtime.c A routine to sanely process times. 609daemon.c Routines to implement daemon mode. This version is 610 specifically for Berkeley 4.1 IPC. 611deliver.c Routines to deliver mail. 612domain.c Routines that interface with DNS (the Domain Name 613 System). 614err.c Routines to print error messages. 615envelope.c Routines to manipulate the envelope structure. 616headers.c Routines to process message headers. 617macro.c The macro expander. This is used internally to 618 insert information from the configuration file. 619main.c The main routine to sendmail. This file also 620 contains some miscellaneous routines. 621map.c Support for database maps. 622mci.c Routines that handle mail connection information caching. 623parseaddr.c The routines which do address parsing. 624queue.c Routines to implement message queueing. 625readcf.c The routine that reads the configuration file and 626 translates it to internal form. 627recipient.c Routines that manipulate the recipient list. 628savemail.c Routines which save the letter on processing errors. 629sendmail.h Main header file for sendmail. 630srvrsmtp.c Routines to implement server SMTP. 631stab.c Routines to manage the symbol table. 632stats.c Routines to collect and post the statistics. 633sysexits.c List of error messages associated with error codes 634 in sysexits.h. 635trace.c The trace package. These routines allow setting and 636 testing of trace flags with a high granularity. 637udb.c The user database interface module. 638usersmtp.c Routines to implement user SMTP. 639util.c Some general purpose routines used by sendmail. 640version.c The version number and information about this 641 version of sendmail. Theoretically, this gets 642 modified on every change. 643 644Eric Allman 645 646(Version 8.34, last update 12/11/93 17:35:33) 647