On Thu, 5 Feb 1998, Jonathan Knight wrote:
> Exim version 1.70
>
> I'm having some trouble with header_sender_verify. With this feature turned
> on and with no mention of headers_check_syntax and headers_checks_fail I
> would expect that the From, Sender or reply-to addresses that are invalid
> would not be accepted by exim. However this is not the case
headers_sender_verify
Type: boolean
Default: false
If this option is set with sender_verify, and the sending host does not |
^^^^^^^^^^^^^^^^^^
Did you have that set?
> What I want to stop is the spam mail from made up domain names to
> non-existant users cluttering my system. The error message that is created
> by exim to say that the user is unknown (on our mail gateway) cannot be sent
> because the From: address is invalid.
The error message that is created by Exim will not be send to the From:
address. It will be sent to the sender address in the message's envelope
(the argument of the SMTP MAIL FROM command). Setting sender_verify
verifies this address independently of any headers.
Have you considered setting receiver_verify, which will stop mail to
non-existent users at the SMTP stage?
--
Philip Hazel University Computing Service,
ph10@??? New Museums Site, Cambridge CB2 3QG,
P.Hazel@??? England. Phone: +44 1223 334714
--
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