The long version is this. I'm having some difficulties with gids. I'm running mailman 2.1.5 and sendmail 8.12.10 on a redhat linux 7.2 box. Both the mailman and sendmail I compiled from source, they're not RPMs. If I use the defaults for group name when I configure, I get an error:
"Group mismatch error. Mailman expected the mail wrapper script to be executed as group "mailman", but the system's mail server executed the mail script as group "mail". Try tweaking the mail server to run the script as group "mailman", or re-run configure, providing the command line option `--with-mail-gid=mail'."
So no problem, I just use the "--with-mail-gid=mail" switch for configure, rather than messing with sendmail. This worked. (It worked with 2.1.3 too.) Now sendmail is using "mail," and that's what mailman is expecting, so everyone is happy.
New wrinkle. Now I want to have my mail alias for the list invoke procmail first, and then from the procmail recipe I pipe to mailman. So my alias entry looks like this:
mmtest: "|/usr/bin/procmail -m /etc/procmailrcs/mailman mmtest"
(By the way, the FAQ entry says to use a variable assignment "MAILMAN=mmtest" to pass the list name, but the current version of procmail won't allow that if the rc file is in /etc/procmailrcs, for security reasons. Putting the listname as an argument and then capturing it in the rcfile as $1 works. But I digress.)
When I do this, the group mismatch error comes back again, in reverse: mailman now expects the group "mail" but the system is executing the script as group "mailman." I assume this is because the mail/mailman executable is owned by mailman.mailman and is setgid, so when procmail launches it, it gets that gid.
So, I could change the configure option back. But I want to avoid a situation where my procmail setup works and the standard alias doesn't. So I need to get the same group ownership both ways.
One solution would seem to be to configure using "--with-groupname" and "--with-mail-gid" both set to "mail," which is the group that sendmail wants to use to run the wrapper. Then presumably mailman will have that gid when procmail launches it as well. Is there a reason that this is a bad idea?
The other solution would seem to be to get in and change sendmail so that it uses the mailman group instead, but then I don't know what other effects that will have.
So, is it ok to have those both be "mail." Or is there some other way?
-Andy
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