spam getting through.

[David While]

I had this problem with freeuk.net - our sending mail server was not our inbound mail server. They perform a check to see that the mail they have just received came from a machine with an MX record - if not they reject the mail.
 
I tried to point out the error of their ways but I think it fell on deaf ears.
 
David While
School of Computing & Information
University of Central England
Brimingham UK.

	-----Original Message----- 
	From: MailScanner mailing list on behalf of Julian Field 
	Sent: Wed 15/09/2004 20:15 
	To: MAILSCANNER at JISCMAIL.AC.UK 
	Cc: 
	Subject: Re: spam getting through.
	
	

	At 19:58 15/09/2004, you wrote:
	>Hi Julian,
	>
	>>>I am also using it at entry with Sendmail. I have days where the spam is
	>>>over 90% and no complaints for over 9 months. My only thought was to
	>>>just use SBL to avoid some of the dynamic IP checks. But I am not sure I
	>>>want mail from anyone not relaying through their ISP or at least a host
	>>>with a MX record.
	>
	>>Please don't start blocking mail coming from servers that aren't MX's. We,
	>>along with many other large sites, treat incoming and outgoing mail as
	>>different services and run them on different servers. Obviously my outgoing
	>>relays don't have MX records as they do not listen for mail from outside
	>>our site, that's the job of the incoming mail servers.
	>
	>Why dont you simply set an MX for those outgoing servers to your incoming
	>MX ?
	
	I probably will when I find someone blocking mail from non-MX's.
	Fortunately it hasn't happened yet. I just have a domain-wide set of MX
	records, I don't have MX records for any individual machines.
	
	Good idea though.
	--
	Julian Field
	www.MailScanner.info
	Professional Support Services at www.MailScanner.biz
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