finding a spammer relaying through sendmail

[Alejandro Imass]

I had a similar problem and discovered it was an old version of OSCommerce.
Maybe you have some similar application that is vulnerable to spam robot
injection. In the OSC case aforementioned it somehow allowed to install
spam robots through a weakness in the image upload code.

On Tuesday, April 14, 2015, David Banning <
david+dated+1429419205.67aac2 at skytracker.ca> wrote:

> I have around 40 email users on my system,  and one seems have had their
> login info stolen.  Is there a way to determine which user is being given
> authorization to relay through sendmail? I have increased sendmail logging
> to 15 but the sender is flagged only as an email address, one unknwon to
> me.
>
> Any pointers would be helpful.
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