masqmail

annotate docs/uucp-setup @ 88:39014fc31dbe

added a document that describes UUCP relevant stuff I'm not familiar with UUCP, so I hope the information is correct
author meillo@marmaro.de
date Sat, 19 Jun 2010 18:53:45 +0200
parents
children d3e39ba684a3
rev   line source
meillo@88 1 This document includes UUCP related information
meillo@88 2
meillo@88 3 Note: My knowledge of UUCP setups is very poor. I hope that the
meillo@88 4 provided information is correct. Improvements to this document
meillo@88 5 are very welcome. --meillo
meillo@88 6
meillo@88 7 UUCP setups call the MTA as `rmail'. Until version 0.2.23 masqmail
meillo@88 8 could be called with this name. It switched to read-message-from-stdin
meillo@88 9 mode then. AFAIK this is not enough to support UUCP, at least not at
meillo@88 10 the level that is presumed by UUCP software. It seems as if at least
meillo@88 11 the first input line should be handled special as it includes the
meillo@88 12 envelope recipient. (Correct me if I'm wrong.)
meillo@88 13
meillo@88 14 A better, through still basic approach, was introduced with 0.2.24:
meillo@88 15 misc/rmail is a small shell script (taken from postfix), which calls
meillo@88 16 masqmail with appropriate options. Copy the script into your path and
meillo@88 17 ensure that the included sendmail variable points to the masqmail
meillo@88 18 executable.
meillo@88 19
meillo@88 20 A more sophisticated rmail implementation seems to be available from
meillo@88 21 sendmail. I don't know details about it and whether it is needed. The
meillo@88 22 difference of sendmail's rmail implementation could be related to
meillo@88 23 address rewriting (user@example.org <-> org!example!user). But I
meillo@88 24 don't know details -- if you do, please let me know.
meillo@88 25
meillo@88 26
meillo@88 27 UUCP makes use of the -f (set return path address, i.e. from whom the
meillo@88 28 mail is) option of masqmail which is only permitted for user root,
meillo@88 29 the trusted user (usually `mail'), and the trusted group (often group
meillo@88 30 `mail'). UUCP, however, usually runs as user and group `uucp'.
meillo@88 31
meillo@88 32 Masqmail currently supports only one trusted group and it is planned
meillo@88 33 to remain so for simplicity reasons. (If you have good arguments on
meillo@88 34 the case, try to convince me of the opposite.) Therefore the solution
meillo@88 35 for masqmail is to add the user `uucp' to the trusted group (often
meillo@88 36 group `mail'):
meillo@88 37
meillo@88 38 usermod -G mail -a uucp
meillo@88 39
meillo@88 40 This is not the perfect solution but an acceptable trade-off.
meillo@88 41
meillo@88 42
meillo@88 43 If one really needs to enable user `uucp' to set -f but can not add
meillo@88 44 it to the trusted group, see the comment in is_privileged_user() in
meillo@88 45 permissions.c. It shows a hack which allows to trust another group,
meillo@88 46 for instance the group `uucp'.
meillo@88 47
meillo@88 48
meillo@88 49 See [1] for reasons why -f is important and needed.
meillo@88 50
meillo@88 51 [1] http://bugs.hylafax.org/show_bug.cgi?id=842
meillo@88 52
meillo@88 53
meillo@88 54 meillo