Sam wrote:
>
> I'm a little newbie with exim and don't see exactly where to search to
> tell my acl to consider failed reverse dns as if there were no reverse
> dns at all ... beacause I think that's the problem in the error log.
Did you bother to grep the Debian default config files for
reverse_host_lookup? If you had, you would have found:
> # Warn if the sender host does not have valid reverse DNS.
> #
> # If your system can do DNS lookups without delay or cost, you might want
> # to enable this.
> # If sender_host_address is defined, it's a remote call. If
> # sender_host_name is not defined, then reverse lookup failed. Use
> # this instead of !verify = reverse_host_lookup to catch deferrals
> # as well as outright failures.
> .ifdef CHECK_RCPT_REVERSE_DNS
> warn
> message = X-Host-Lookup-Failed: Reverse DNS lookup failed for $sender_host_a
> ddress (${if eq{$host_lookup_failed}{1}{failed}{deferred}})
> condition = ${if and{{def:sender_host_address}{!def:sender_host_name}}\
> {yes}{no}}
> .endif
Note that this section merely sets a header, which you can then use in
your spamassassin rules if you like. If you want to deny (or defer)
outright on this condition, of course you can change the ACL.
- Marc
