At 11:34 +0000 2003/01/22, Drav Sloan wrote:
>Howdy all,
>
> Is there is a way to verify a host has an MX (i.m not too fussed
>about MX's that point to RFC1918 addresses) without having to do a
>callback on that host? I'd like to do an ACL that will reject any
>host that has no MX records, with a differing message than the
>callback verify routine. I cannot see a way to do this without doing
>sommat silly like setting the callback timeout to be 1 second.
>
you simply do not ask for callback:
verify = sender
This will check the routing (and I believe that means either MX or an
A record, although I am not sure about the second).
Giuliano
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