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> Xmail With Dovecot Problem, Issue getting XMail to run as dovecot
cfmunster
Posted: May 12 2008, 01:55 AM
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I am working off of NomadCF's HOWTO for XMail and Dovecot and I have a problem. I can't get XMail to run as the dovecot user. The syslog gets this error:

Socket bind error

and XMail shuts down when trying this command:

CODE
su - dovecot -c "/var/MailRoot/bin/XMail -Mr 24 -Pl -Ph -Sl -Ql -Yi 30 -Yl -Fl -Cl -Ll -PX 0 -Sp 50025 -Pp 50110 -Fp 50079 -Ms /var/MailRoot"


This command runs fine for the root user, so I assume the issue is with the dovecot user permissions. The process starts, I can see a bunch of processes in htop, but then they die and I get the socket bind error.

I added the iptables rules and gave the dovecot user ownership of the /var/MailRoot and subdirs, but no love. Any ideas are appreciated.
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hschneider
Posted: May 13 2008, 08:14 AM
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Sure that your OS allows such high port numbers?
Try with 2025 and 2079 instead.


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Harald


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cfmunster
Posted: May 13 2008, 08:53 AM
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thanks for the thought, harald, but i got the same result in the 2000 range. it works fine with root, just not with user dovecot.

i'm at a tech summit this week, i am going to poke around and find a linux guru and see if i can't get some help. i'll post the answer if i get one.
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cfmunster
Posted: May 27 2008, 03:39 AM
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OK, I have sorted out the initial issue, which was that the xmail/dovecot instructions were a little old and the version of xmail then did not have pop3s or smtps. I have fixed that problem with a new command, including -X- -B-, to disable pop3s and smtps for testing:
CODE

su - dovecot -c "/var/MailRoot/bin/XMail -X- -B- -Mr 24 -Pl -Ph -Sl -Ql -Yi 30 -Yl -Fl -Cl -Ll -PX 0 -Sp 50025 -Pp 50110 -Fp 50079 -Ms /var/MailRoot"


XMail now runs as the dovecot user, but the pop3 service does not run successfully. if I telnet to port 110, I get a server busy error.

Separately, I am getting a PAM auth error from Dovecot, so I may either use the original auth idea from NomadCF or roll my own pam auth against XMail CtrlClnt.

Any thoughts on the best approach are appreciated.

*EDIT*

Doh! Guess I should set the POP3 thread count above 0. Mail now works, next I am on to integrating Dovecot authentication.
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cfmunster
Posted: May 27 2008, 04:43 AM
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Got it! The trick with Dovecot is to set login_user in dovecot.conf to its own user that isn't used anywhere else. By the instructions, I was interpreting that to mean setting login_user as user dovecot, but the system will not let the same user that is running the login process actually log in, so it fails. I created a user/group just for the dovecot login process and set it in login_user, e.g. login_user = <user> in dovecot.conf. Now everything works - Dovecot with Xmail -based authentication.
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hschneider
Posted: May 27 2008, 06:42 AM
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Thanks for the feedback here !


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Bye,
Harald


-- Download XMail Queue Manager 1.46 NOW: XMail Server Tools
-- Cross platform remote queue management!
-- Message analyzing on the fly!
-- Builtin diagnostics knowledge base!
-- Manages multiple mail queues!

Sponsored by
CD-Produktion und DVD-Produktion and Homestaging Saarland - Immobilien schneller verkaufen in der Region Saarland, Rheinland-Pfalz und Luxembourg
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