[wellylug] Server acting as a mail relay

[Mark Foster]

Get a copy of an example offending message's headers and find the 
corresponding date/time in your logs, to start with?

On Mon, 12 Oct 2009, Hong Chyr wrote:

> Hi all
>
> I am experiencing a strange issue with a co-lo mail server. We are
> running Postfix on the server, and we have restricted the trusted domain
> to localhost.
>
> mynetworks=127.0.0.1/8
>
> We have also tested the server using open relay test sites such as
> http://www.abuse.net/relay.html. The result reported the server as not
> being an open relay.
>
> However, we received some complains from our co-lo provider that some
> spam emails have been relayed from our server. How can I troubleshoot
> this problem?
>
> Many thanks for your input.
>
> Regards
>
> Hong
>
>
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