Weird sendmail behavior 2003-12-02 - By Andy Browne
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Hi Joe,
Check that PC very carefully for a trojan etc.............
Andy
Joe Polk wrote:
> Okay, it's time to post this here.
> A client of mine has a sendmail server that up until 2 days ago has worked
> flawlessly. Then, suddenly it started slowing down. Nothing in top showed
> anything beating the server, save minor memory useage on some httpd child
> instances. Restarted httpd, same issue: slow. Restarted sendmail, same.
> Checked iptraf. There seemed to be alot of DNS queries. Hmmm...stopped
> sendmail and the dns queries subsided. Thing is, they weren't really hammering
> the system. Anyway, checked mqueue and there were some messages in there that
> were basically bogus or spam requests. Removed them. Things seemed to be
> better today, however, something new is happening. One user, and only 1, gets
> rejected. We have sendmail setup to use spamcop and spamhaus and this user is
> having her outgoing mail rejected using that. This is odd. This user is on a
> 192.168.0 subnet and so is everyone else. They all work and use Outlook
> clients. They have the option of using the webmail client which is working for
> her with no problem. She only gets an error when using Outlook. I'm really
> stumped, though it may be an easy answer. Anyone?
>
> <<JAV>>
>
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