Zimbra

eatickets · #1 (**permalink**) 10-24-2011, 01:13 PM

I'm sure I'm not the only one who's tried to do this, but I've checked the forums and Google and couldn't find any instructions or documentation on this one: is there any way to tell Zimbra to block email from any IP address that doesn't resolve via a reverse DNS lookup?

I'm running ZCS Version 6.0.14_GA_2928.NETWORK on Ubuntu 8.04.

gvillaran · #2 (**permalink**) 10-26-2011, 12:19 PM

I think there is a check button to do that in the MTA tab in Global Settings?

eatickets · #3 (**permalink**) 10-26-2011, 12:26 PM

Quote:

Originally Posted by gvillaran

I think there is a check button to do that in the MTA tab in Global Settings?

I found a "DNS Settings" section. I'm assuming the setting you're thinking of is the check box for "Sender's domain (reject_unknown_sender_domain)"?

gvillaran · #4 (**permalink**) 10-26-2011, 12:29 PM

yes, thats the option i was thinking about.

is that what you want?

eatickets · #5 (**permalink**) 10-26-2011, 12:32 PM

That's probably what I want, but I'm not entirely familiar with how the "reject_unknown_sender_domain" command works, so I want to make sure this will fulfill my original request before I implement it.