Sendmail won't send mails

[leon]

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/*

Thanks again.
-- 
Leon