North American Network Operators Group|
Date Prev | Date Next |
Date Index |
Thread Index |
Author Index |
Re: Reverse DNS and SMTP
- From: David Charlap
- Date: Thu Feb 28 17:09:12 2002
Jared Mauch wrote:
> What I do is format my smtp headers such that a very simple
> regex can find mail with no reverse dns and dump it in a spam folder.
> I find this catches a lot of the messages.
If your server is using a heuristic that has the potential of offending
your customers, you can make the blocking optional.
More specifically, respond to the "spam detected" condition by writing a
header that customers can check for. Once that header's in place, a
customer can configure his mail client to accept, delete, or spam-folder
the message. If a client wants these kinds of messages to be deleted on
the server, that may not be too hard to do either, once the header is