On Thu, 17 Sep 1998, C Foster wrote:
> Hi all, hopefully a quick question. A couple of our users have
> received some junk this morning that purports to come from themselves,
> ie. the envelope sender is a forged but genuine local address.
Yes, I noticed that this is starting to happen. Sigh.
> Question is, is there anything I can do about it? I think not,
> but I'm willing to be educated.
(1) You can check the headers as well as the envelope by setting
headers_sender_verify, but of course that can be forged too. Also
headers_check_syntax may help.
(2) Otherwise all you can do is write a filter file that tries to
identify such messages. I expect it might be tricky.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
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