Re: [vps-mail] Question about Sendmail/Spammers

[Abigail Marshall <abigail@xxxxxxxxxxxx>]

--- "Andy McKell, FOCUS Internet" <mac@xxxxxxxx>
wrote:

> 
> The weird combinations are "dictionary" type attacks
> on random addresses, 
> presumably hoping to slip through to a catchall or
> postmaster. 
 
Thanks for your comments, Andy, but you misunderstood
my original post - I wasn't seeing mail sent TO random
combinations on my server, I was seeing mail sent TO a
real address - not as easily guessable as the example
I provided - on a server that hadn't handled mail for
that domain in more than a year. It was the odd
combinations in the FROM field that made it clear to
me that this was spam, since I could not see the email
itself, merely log entries recording the attempted
(and failed) delivery. To confirm my belief it was
spam, I also ran a whois on various IP that were the
source of the mail, and found that they all were
Chinese. 

> The way I handle this (for my clients who pay for
> the service) is as follows:-
> I route all emails (using MX10) through a separate
> server which uses 
> Spamassassin and MailScanner to filter spam/viruses,
> then deliver to the 
> server on which my client's mailbox resides.

My point was that the mail was already routed to a
different server. There should be no way in the world
that you could send email to mydomain.com and have it
end up on the server where the website,
www.mydomain.com is housed. 

In any case, it wasn't a problem with spam being
received - it was a problem with spam being rejected,
but my concern over whether there was a way that any
of that could have been legit mail.  Bennett's
explanation pretty much has alleviated all my
concerns.

-Abigail
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