[CentOS] find out which website is used for sending email?

Les Mikesell lesmikesell at gmail.com
Tue Oct 27 12:54:54 UTC 2009

Peter Peltonen wrote:
> On Tue, Oct 27, 2009 at 10:05 AM, John R Pierce <pierce at hogranch.com> wrote:
>> Peter Peltonen wrote:
>>> I got a report that my CentOS 5.4 is used for sending spam.
>>> >From sendmail maillog I can see that apache has been sending a lot of
>>> email to suspicious addresses.
>>> Probably one of the many Apache virtual hosts I have is used for
>>> sending spam. But how to find out which one?
>> the maillog should show where the messages are coming from
> They just say that Apache is sending them, so I cannot pinpoint the
> virtual host.
> But apparanelty I can force (override) the sender in the VirtualHost
> with this line:
>   php_admin_value sendmail_path  "/usr/sbin/sendmail -t -i -f
> emailcop at doimanname"
> where you replace domainname with the one in the virtual host. This
> will then show up in the maillog.
> Now I just have to wait and watch the maillog...

If the emails are a result of posting to a form you can probably match up the 
timestamps in the http and mail logs.

   Les Mikesell
    lesmikesell at gmail.com

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