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DNSBL before mail arrives [message #186] Tue, 21 August 2007 15:38
James Wilkinson
Messages: 14
Registered: July 2007
Junior Member
Hi there,

Would it be possible to have a DNSBL check around the HELO/EHLO response, or at least before the body of the e-mail is received? That would enable mail to be rejected before it could use too much bandwidth. Of course, this wouldn't be compatible with /redirect or /deliver policies...



Re: DNSBL before mail arrives [message #187 is a reply to message #186] Fri, 24 August 2007 12:35 Go to previous message
Messages: 925
Registered: April 2004
Senior Member
The hostname/IP submitted in Helo/Ehlo is already checked by the DNSBL filter, though only after the mail has been (at least partially) transmitted.

This would help reduce resource usage, but wouldn't improve filtering results. At the moment I say that the benefit is too little to warrant this change, but thanks for suggesting this!

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