Sendmail won't send mails

[leon]

Keith Sharp <kms at passback.co.uk> writes:

 | On Sun, 2006-03-05 at 14:38 +0000, leon wrote:
 | > David Woodhouse <dwmw2 at infradead.org> writes:
 | > 
 | >  | On Sun, 2006-03-05 at 14:17 +0000, leon wrote:
 | >  | > Here is /var/log/maillog
 | >  | 
 | >  | Connection timed out when trying to contact any host outside cam.ac.uk.
 | >  | That's hardly surprising; the UCS started filtering outgoing port 25
 | >  | from undergrad machines (and indeed any machines not explictly
 | >  | permitted) about a decade ago.
 | >  | 
 | >  | Use a smarthost -- probably smtp.hermes.
 | >  | 
 | >  | -- 
 | >  | dwmw2
 | > Very informative. Thanks.
 | > 
 | > 1. Can I choose another port to workaround?
 | > 2. How to delete queue mails in /var/spool/mqueue:
 | >    ? rm -rf /var/spool/mqueue/*
 | 
 | That probably won't work, somewhere a firewall is preventing OUTBOUND
 | connections to port 25, this is a common practice these days.
 | 
 | What you need to do is:
 | 
 | 1) Edit /etc/mail/sendmail.mc and uncomment line 22:
 | 
 | dnl define(`SMART_HOST',`smtp.your.provider')
 | 
 | by deleting "dnl".  Replace smtp.your.provider with the correct
 | smarthost for your network.
 | 
 | 2) Stop and restart sendmail (as root):
 | 
 | 	/sbin/service sendmail restart
 | 
 | All the mail in the queue should now be sent, this might take several
 | minutes, and future emails should work as well.
 | 
 | Keith.
Problem solved.
Many thanks.
-- 
Leon