xref: /original-bsd/usr.sbin/sendmail/src/TODO (revision 4c0050d5)
1(Version 8.30 of 02/06/95)
2
3Key:
4  X -- extension (user visible change)
5  B -- bug fix
6  S -- security fix
7  E -- enhancement to existing algorithm
8
9
10X ****	Multiple queues.
11
12X ****	Merge Sun changes.  [8.7]
13
14E ****	Fix parseaddr to return a dummy mailer with QBADADDR set for
15	all cases except null input; change calls to be more sceptical
16	about the return value, checking this bit instead of just
17	checking for == NULL.  (Eric Wassenaar)  [8.7]
18
19X ****	Run time configurable locking -- e.g., compile in HASFLOCK and
20	HASLOCKF, and then choose at runtime between these.
21
22B ****	Aliases with .REDIRECT fail during newaliases if the "n" flag
23	is given.  Problem is, sometimes you want them to, sometimes
24	you don't.  Perhaps two flavors of "error" mailer?
25
26B ****	Calls to gethostbyname with a trailing dot fail if you are
27	not running DNS.
28
29X ****	Add uucp-bang mailer that strips off any domain name from
30	the envelope recipient address first; this is for use in
31	mailer table entries.
32
33X ****	"quote" map (inverse of dequote).  Lets you turn node::user
34	into "node::user"@DECNET.gateway
35
36X ****	Named rulesets.
37
38? ****	Should $( [1.2.3.4] $) convert the address to a name?
39
40E ***	Have recipient lines rewritten by the user database.
41
42E ***	Arrange to run queue jobs as the owner of that queue file.  This
43	probably requires forcing a fork in order to be able to completely
44	restore the uid/gid portably without leaking out root privileges.
45
46E ***	Long term host status -- store host status on disk for sharing
47	between runs.
48
49X ***	Extend I option to allow setting of retry and timeout values.
50	drl@vuse.vanderbilt.edu (David R. Linn).
51
52X ***	Total connection cache lifespan timeout -- a way to give a
53	timeout on connections regardless of whether they are active
54	or not.  For single threaded servers such as Microsoft SMTP
55	gateway.  Douglas Anderson <dlander@afterlife.ncsc.mil>.
56
57X ***	Mailer flag that does a "ping" equivalent -- if it fails, wait
58	30 seconds and try again (for dialup PPP connections).  Could
59	just try the connection and then immediately retry on some
60	kinds of failures.
61
62X ***	Create a macro that has message size.
63	Peter Wemm <peter@DIALix.oz.au>
64
65E ***	Dynamically allocate MAXNAME buffers for headers.
66
67E ***	Dynamically allocate "line" buffer in readaliases().
68
69X ***	Add -P to set precedence (e.g., -Pbulk). [8.8]  (BCX)
70
71E ***	Don't send ErrMsgFile to postmaster bounces.  (Josh Smith,
72	josh@osiris.ac.hmc.edu).
73
74E ***	Have daemons that start up check the alias database for
75	correctness and auto-rebuild if necessary.  This is to handle
76	the case of a system crash during an alias database rebuild.
77
78E ***	Eliminate E qf line and e_errorqueue; use e_errorsto a la
79	e_receiptto.  This simplifies and gives symmetry.  (Eric
80	Wassenaar)
81
82X ***	DECNET_RELAY support in configs.
83
84X ***	-wN command line flag to set the width of mailq output.
85	(Allan Johannesen)
86
87E ***	Move mailertable lookup after UUCP-specific class checks?
88	(Kimmo Suominen <kim@tac.nyc.ny.us>)
89
90E ***	Users in more than one list with different owners get duplicate
91	deliveries -- maybe just assign them arbitrarily to one
92	envelope or the other?
93
94X **	Have a ruleset (6?) that gets both sender and recipient
95	addresses to check compatibility.  Can you do enough interesting
96	things with this?
97
98X **	Make MAXBADCOMMANDS run time configurable.
99
100E **	Allow mailertable entries of the form ``error:message''.
101
102X **	Have .forward files re-queue if the home directory isn't
103	accessible?  On some option...
104	(Q.G.Campbell@newcastle.ac.uk)
105
106X **	Have local delivery queue if NIS is down?  On some option...
107	(Q.G.Campbell@newcastle.ac.uk)
108
109E **	Have nullclient configuration resolve local names to the local
110	mailer and then redirect them in ruleset 5; this allows you to
111	redirect root differently depending on the client.  It's not
112	clear this is really a good idea though.
113
114E **	Move CurHostAddr into mci struct, and make CurMCI variable
115	point to this, so that logging will give the correct address
116	instead of (0) for cached connections.  Motonori Nakamura.
117
118X **	Allow use of a generalized network service for aliasing?
119	How would the protocol be defined?
120	James Gritton <gritton@byu.edu>.
121
122E **	Make "local configuration error" a temporary failure?
123	(add EX_CONFIG to the markfailure list)
124
125X **	(sigh) BSMTP.
126
127X **	"E" configuration line that sets environment variables.
128
129E **	Change listen() high-load backoff to accept and issue a 4xx
130	message so that it responds more quickly.
131
132E **	Change "/usr/tmp/dead.letter" to be based on _PATH_VARTMP.
133
134B **	Commas in NAME envariable cause problems (Peter Wan
135	<peter@cc.gatech.edu>).  Merge with suggestions to use
136	MIME-format for 8-bit characters?
137
138E **	Save address information that comes back as the "additional
139	records" part of an MX lookup, to avoid additional name server
140	attempts.  If there is an MX record without an additional A
141	record, delete it (this avoids a problem with misconfigured
142	DNS situations).
143
144X **	Allow a way to extend the $Z macro with local configuration
145	information.
146
147X **	Allow $x in -bt mode to expand macro "x".  (BCX)  [8.8]
148
149X **	Allow /address in -bt mode to expand address through ruleset 0,
150	aliases, etc. and display results.  [8.8]
151
152X **	"R mailer address" in -bt mode does remotename on address.
153
154E **	Adjust "infinite loop in rule" code to handle entire ruleset
155	(Code from Michael Corrigan).
156
157E **	Allow :include: from command line (not SMTP) to assist in
158	"personal list" management -- i.e., creating lists that
159	cannot be EXPNed.
160
161X **	Database (keyed lookup) auto-rebuild.
162
163X **	Find a good test suite and include in the distribution.
164
165S **	You can use symbolic links to point into protected directories.
166	(AEJ)
167
168X **	Extend OI to allow separate settings for canonification, MX, and A
169	lookups.  [8.8?]
170
171X **	Add $!x class to match any number of words not in class x. (KRE)
172
173X **	LOCAL_RULE_5 (Spencer Sun, spencer@phoenix.Princeton.EDU)
174
175X **	Add "bestmx" map -- returns "best MX host" for this address.
176	Allows you to do automatic detection of when you are the best
177	MX for a given address.  [8.7?]
178
179X **	Some way to diddle resolver flags on a per-lookup basis, such
180	as a flag to the map declaration.  (Rick McCarty)
181	- Is this really a good idea?  DNSRCH can be turned off by
182	  putting a dot at the end.  AAONLY?
183
184X **	Extend makemap to "gather" values -- i.e., merge entries that
185	have the same keys. [8.8]  (BCX)
186
187E **	Allow error messages on individual addresses in the qf file.
188	(BCX)
189
190X **	Multi-character option names.  [9.1]
191
192X **	User database extensions for mailing lists:
193	list:precedence -- Precedence: value for new message
194	list:envelopefrom -- envelope "from" value for new message
195	others?  [8.8]
196
197X **	Command line switch to set precedence (for mailing list
198	generation).  (BCX)
199
200B **	Restore `T' line to eliminate X-Authentication-Warning: at
201	inappropriate times.  (Christophe Wolfhugel)
202	- T could become a shorthand for Ct -- i.e., create a new
203	  predefined class.
204	- Eliminate "<user> set sender to <address>" message entirely?
205	  (this is the workaround)
206
207B **	Return-Path: header should have <> added if not already there.
208
209X **	Add heuristic to determine if other end is a sendmail; use
210	that to decide whether or not to honor F=I mailer flag.
211	[der Mouse <mouse@collatz.mcrcim.mcgill.edu>]
212
213X **	Automatically drop into MIME mode if you have a full name
214	with 8-bit characters.  See envelope.c 8.19.1.1 and util.c
215	8.17.1.1.  From Anders Ellefsrud <anders@ifi.uio.no>.
216
217X **	-b? flag to read a header and show you what it will look like
218	after all rewriting for an indicated address.
219
220E **	Log $u in logsender() (for=<someaddress>).
221
222B **	Include SOCKADDR in MCI struct for logging (currently gives
223	a sockaddr of zero when printing from the cache).
224
225X **	Allow option to set the characters that are autoquoted in
226	addresses?
227
228X *	Map that does MB/MR lookups.  Rick McCarty <mccarty@io.com>.
229
230X *	Allow $> anywhere in RHS.  John Boeske <jboeske@ualberta.ca>.
231
232X *	-V flag to print state of all (?) compilation flags.
233
234X *	Handle Expires: header field (if still in queue).
235
236X *	WIN/3B support (non-atomic rename, no h_addr_list, others?)
237	(Bruce Lilly <blilly!bruce@uu.psi.com>)
238
239X *	Sun YBTS daemon uses -ba.  [Martin Kiff <MGK@newton.npl.co.uk>]
240
241B *	EXPN adds @domain to all mailers, including prog.  Is this right?
242	[Bob Henry]
243
244B *	EXPN adds @localhost instead of @$M.  [Pel Emanuelsson]
245
246E *	Change body put code to time out around individual puts.  This will
247	make the timeout algorithm more responsive and more resilient.
248	Unfortunately, it's also a pain in the butt.
249
250X *	Some way to relay unfound local users to another site.
251
252X *	Disable all default RW sets except mailer-specific?
253
254
255-------------------------------------------------------------------------------
256
257IDA Features that have been requested:
258
259* USERMAILER
260
261* LOCAL_MX_HANDLER
262