Search found 28 matches

by eatickets
Mon Nov 14, 2011 1:15 pm
Forum: Installation and Upgrade
Topic: Block IPs that Don't Resolve via Reverse DNS Lookup
Replies: 17
Views: 1819

Block IPs that Don't Resolve via Reverse DNS Lookup

[quote user="10330phoenix"]Really? The reply I gave was in response to this question:That seems to be asking how to set-up a reverse DNS unless my understanding of English is different than yours?[/QUOTE]That question came from Yves Pires vague instruction:[QUOTE]mail server without revers...
by eatickets
Mon Nov 14, 2011 12:16 pm
Forum: Installation and Upgrade
Topic: Block IPs that Don't Resolve via Reverse DNS Lookup
Replies: 17
Views: 1819

Block IPs that Don't Resolve via Reverse DNS Lookup

[quote user="10330phoenix"]If you have no reverse DNS then you'' need to contact your ISP to create one for you. The fact you've asked the question would (possibly) indicate that you don't have a rDNS or that you didn't set it up. You can check it via a web site or with...
by eatickets
Mon Nov 14, 2011 12:09 pm
Forum: Installation and Upgrade
Topic: Block IPs that Don't Resolve via Reverse DNS Lookup
Replies: 17
Views: 1819

Block IPs that Don't Resolve via Reverse DNS Lookup

[quote user="Yves Pires"]mail server without reverse DNS configured[/QUOTE]Half a sentence does not answer my question. Are you trying to say that my email server is poorly configured if it does not have reverse DNS configured? And if that's the case, can you perhaps point me in the di...
by eatickets
Mon Nov 14, 2011 10:52 am
Forum: Installation and Upgrade
Topic: Block IPs that Don't Resolve via Reverse DNS Lookup
Replies: 17
Views: 1819

Block IPs that Don't Resolve via Reverse DNS Lookup

[quote user="Yves Pires"]bad mail server setup[/QUOTE]
What do you mean by this?
by eatickets
Wed Nov 09, 2011 2:25 pm
Forum: Installation and Upgrade
Topic: Block IPs that Don't Resolve via Reverse DNS Lookup
Replies: 17
Views: 1819

Block IPs that Don't Resolve via Reverse DNS Lookup

Also, can anyone give me the likelihood of legitimate email being blocked with this reverse DNS lookup feature enabled?
by eatickets
Wed Oct 26, 2011 3:33 pm
Forum: Installation and Upgrade
Topic: Block IPs that Don't Resolve via Reverse DNS Lookup
Replies: 17
Views: 1819

Block IPs that Don't Resolve via Reverse DNS Lookup

But, is that the same thing as an IP address not resolving to a domain via reverse DNS lookup? It sounds like it is, but I want to make sure.
by eatickets
Wed Oct 26, 2011 2:32 pm
Forum: Installation and Upgrade
Topic: Block IPs that Don't Resolve via Reverse DNS Lookup
Replies: 17
Views: 1819

Block IPs that Don't Resolve via Reverse DNS Lookup

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.
by eatickets
Wed Oct 26, 2011 2:26 pm
Forum: Installation and Upgrade
Topic: Block IPs that Don't Resolve via Reverse DNS Lookup
Replies: 17
Views: 1819

Block IPs that Don't Resolve via Reverse DNS Lookup

[quote user="gvillaran"]I think there is a check button to do that in the MTA tab in Global Settings?[/QUOTE]
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)"?
by eatickets
Mon Oct 24, 2011 3:13 pm
Forum: Installation and Upgrade
Topic: Block IPs that Don't Resolve via Reverse DNS Lookup
Replies: 17
Views: 1819

Block IPs that Don't Resolve via Reverse DNS Lookup

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'...
by eatickets
Mon Sep 26, 2011 3:54 pm
Forum: Administrators
Topic: Store Zimbra Backups Off Server
Replies: 5
Views: 565

Store Zimbra Backups Off Server

My apologies, I mis-spoke: are there any solutions aside from a network-mounted backup? (i.e. an FTP solution or a Zimbra plugin that will let us save the backups off-server without forcing us to keep the backup server space connected regularly) The solution must be integrated with Zimbra in such a ...

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