behind a firewall but no don't have a SPLIT-DNS setup / never done it before
But, We do have a internal DNS server that the zimbra server resolves to, I really don't want to setup ANOTHER DNS server. What other way can I do this? Would this resolve the issue? :
Setting up the internal domain as primary and then setting up a Virtual Domain using the External domain and having everyone use that as their primary on their email accounts?
loops back to myself
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loops back to myself
Anyone have any ideas about this?
loops back to myself
Came across this thread and another earlier today when I had a similar problem with an install. Turns out it had nothing to do with the server itself. A firewall performing NAT and port forwarding had hijacked outbound port 25 traffic and was redirecting it back to the mail server. Port forward fixed, mail loop errors went away. Probably not pertinent to this particular problem but I thought I'd mention it.
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loops back to myself
Interesting, so you fixed it with port forwarding?
[quote user="kcearns"]Came across this thread and another earlier today when I had a similar problem with an install. Turns out it had nothing to do with the server itself. A firewall performing NAT and port forwarding had hijacked outbound port 25 traffic and was redirecting it back to the mail server. Port forward fixed, mail loop errors went away. Probably not pertinent to this particular problem but I thought I'd mention it.[/QUOTE]
[quote user="kcearns"]Came across this thread and another earlier today when I had a similar problem with an install. Turns out it had nothing to do with the server itself. A firewall performing NAT and port forwarding had hijacked outbound port 25 traffic and was redirecting it back to the mail server. Port forward fixed, mail loop errors went away. Probably not pertinent to this particular problem but I thought I'd mention it.[/QUOTE]
loops back to myself
The port forwarding was causing the problem. They had an edge device forwarding inbound 25 traffic to the mail server. For some reason, maybe a faulty device or improperly setup forward, outbound 25 traffic was being redirected back to the server. Inbound mail worked fine, outbound did not.
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- Joined: Fri Sep 12, 2014 11:21 pm
loops back to myself
Wierd. See our Outbound and Inbound works fine. I still get that Error every day or every other day. I spent a long time with a Zimbra Employee tryin to figure out what was going on and he just came to the conclusion to not worry about it and everything was setup correctly.
How has your installation been? Everything running smoothly>
How has your installation been? Everything running smoothly>
loops back to myself
Other than the odd looping yesterday (now thankfully fixed) it's been all good
Re: loops back to myself
Hi reopening this topic if somebody can help me to clarify the following.
I am on Zimbra 8.8.8 / Centos 7 with dnsMasq (Bind is too complicated for me!) and the email server works perfectly with the exception above.
I think that the emails originated by Centos and addressed to root@domain.com are not delivered (system warnings and other stuff). My Zimbra admin account has a "root" alias to capture these system-generated emails. I also can email to myself no problem.
I checked all the recommendation for :
From Mark Stone blog I am not sure if I should add to dnsmasq.conf also the below line?
Anything that looks strange to you that might cause the problem ?
Code: Select all
message bounce detail (by relay)
--------------------------------
none (total: 2)
2 mail for mail.domain.com loops back to myself
I think that the emails originated by Centos and addressed to root@domain.com are not delivered (system warnings and other stuff). My Zimbra admin account has a "root" alias to capture these system-generated emails. I also can email to myself no problem.
I checked all the recommendation for :
Code: Select all
/etc/hosts.conf
127.0.0.1 localhost.localdomain localhost
192.168.0.xxx mail.domain.com mail
/etc/resolv.conf
search domain.com
nameserver 127.0.0.1
/etc/dnsmasq.conf
server=myLANDNS or myISPDNS
listen-address=127.0.0.1
mx-host=domain.com,mail.domain.com,5
domain=domain.com
Code: Select all
address=/mail.domain.com/192.168.0.xxx