I think I used to know the answer to this, but I was just looking at section 10 of the exim spec and didn't find the info I was looking for. (Treatment of various other things is laid out pretty well, but not this case.)
If you have a wildcard host name item in a hostlist that needs to match by IP, is there any forward-DNS checking against the results of the reverse DNS lookup? For example, suppose I want to set "tls_advertise_hosts" to "*.example.com". When a connection comes in, exim can do a reverse DNS lookup and get an answer like "friend.example.com". It's obviously not too smart to trust a reverse DNS answer at face value. Does exim check via forward DNS that "friend.example.com" maps to the IP address seen on the incoming connection? Documentation for $sender_host_name lead me to believe the forward DNS checking is probably done, but it's not conclusive. Thanks -- [EMAIL PROTECTED] (WJCarpenter) PGP 0x91865119 38 95 1B 69 C9 C6 3D 25 73 46 32 04 69 D6 ED F3 -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
