goodoldfriend
MIS
I am thinking of using reverse DNS lookups to help block SPAM. (I actually got blocked once due to a DNS error!) How is it implemented in EX 5.5? Thanks.
Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations strongm on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!
Reverse DNS lookups
- Thread starter goodoldfriend
- Start date
- Status
brontosaurus
MIS
Ex 5.5 does reverse lookups by default, but it does NOT stop inbound email based on a failed reverse lookup. If there's a reg hack to change this, I don't know (but if anyone does, please chime in), so the short answer is, you can't implement an anti-spam plan using reverse lookups with exchange 5.5.
- Status
Similar threads
- Locked
- Question