Fake MX records

[Jeff Mills]

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info 
> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf 
> Of am.lists
> Sent: Wednesday, 25 July 2007 1:39 PM
> To: MailScanner discussion
> Subject: Re: Fake MX records

> 
> reality: we see incoming spam connections coming in on 
> mail.hogswaggle.net although this is neither posted publicly, 
> nor has it ever been posted in any mx record.

Inbound port 25 should be firewalled for the real mail server.
The only way in should be via mailscanner and ideally, the mail server
itself should not accept connections from anything other than your
mailscanner server(s). Let the spammers randomly try addresses!