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annotate docs/uucp-setup @ 88:39014fc31dbe

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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
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children d3e39ba684a3
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39014fc31dbe added a document that describes UUCP relevant stuff
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1 This document includes UUCP related information
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2
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3 Note: My knowledge of UUCP setups is very poor. I hope that the
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4 provided information is correct. Improvements to this document
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5 are very welcome. --meillo
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6
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7 UUCP setups call the MTA as `rmail'. Until version 0.2.23 masqmail
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8 could be called with this name. It switched to read-message-from-stdin
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9 mode then. AFAIK this is not enough to support UUCP, at least not at
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10 the level that is presumed by UUCP software. It seems as if at least
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11 the first input line should be handled special as it includes the
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12 envelope recipient. (Correct me if I'm wrong.)
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13
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14 A better, through still basic approach, was introduced with 0.2.24:
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15 misc/rmail is a small shell script (taken from postfix), which calls
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16 masqmail with appropriate options. Copy the script into your path and
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17 ensure that the included sendmail variable points to the masqmail
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18 executable.
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19
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20 A more sophisticated rmail implementation seems to be available from
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21 sendmail. I don't know details about it and whether it is needed. The
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22 difference of sendmail's rmail implementation could be related to
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23 address rewriting (user@example.org <-> org!example!user). But I
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24 don't know details -- if you do, please let me know.
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27 UUCP makes use of the -f (set return path address, i.e. from whom the
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28 mail is) option of masqmail which is only permitted for user root,
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29 the trusted user (usually `mail'), and the trusted group (often group
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30 `mail'). UUCP, however, usually runs as user and group `uucp'.
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31
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32 Masqmail currently supports only one trusted group and it is planned
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33 to remain so for simplicity reasons. (If you have good arguments on
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34 the case, try to convince me of the opposite.) Therefore the solution
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35 for masqmail is to add the user `uucp' to the trusted group (often
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36 group `mail'):
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37
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38 usermod -G mail -a uucp
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39
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40 This is not the perfect solution but an acceptable trade-off.
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41
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42
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43 If one really needs to enable user `uucp' to set -f but can not add
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44 it to the trusted group, see the comment in is_privileged_user() in
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45 permissions.c. It shows a hack which allows to trust another group,
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46 for instance the group `uucp'.
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48
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49 See [1] for reasons why -f is important and needed.
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50
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51 [1] http://bugs.hylafax.org/show_bug.cgi?id=842
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54 meillo