Just a few quick notes on your questions. 1. Yes, I am. 2. No trust issues for me. I would also agree that as a matter of hood practice the source code should be audited. 3. I would guess so but not much information/feedback yet. 4. Yes, I have ZCS 9 running but I'm still fiddling with it. 5. No, I'...

That, to me, would imply that there's nothing wrong with your server. If I were you I'd ask to see some evidence that the problem exists on your server. I've also sent mail from my gmail and protonmail accounts and they also show no problems. BTW, I forgot to say that if this really is a problem the...

Check your server TLS by using this site: https://ssl-tools.net/mails

The default setting for zimbraMtaSmtpTlsSecurityLevel is 'may' and my server doesn't show any problems with that check site.

edisu wrote:Hi, we have zimbra network edition Patch 11 multi-node environment.

That doesn't tell us anything about your ZCS version and you should always post the full output of the following command:

As you're an NE user I'd suggest you open a support case about this 'problem'.

balajiv.maa wrote:Dear All.. Please help me to resolve duplicate mail issue.

Did you read this post (2nd in this thread)?

Raun wrote:So basically you are saying if someone sends you an email with the DL in to/cc , you get duplicate emails?
If thats the case then its expected.

Tenshou wrote:I am using the Zextras version

As I mentioned, I have no problem rebooting my server and Zimbra starts-up every time. Possibly the only difference may be the CentOS release, I'm using CentOS8 and you?

A quick internet search found this: http://www.bachus.us/blog/2014/07/02/zimbra-abuse-alerts/ - see if that does what you need.

From where did you download this release if ZCS, is it a Zimbra release? I've installed the version from Zextras and that has no problem restarting after a reboot.

You can download the build from Zextras here: https://www.zextras.com/zimbra-9/

You need to update your ZCS server to the most recent version ASAP, earlier versions have exploits and expose your server to being hacked.

phoenix wrote:

Kordian wrote:No ideas? Do not tell me all that use the open source version distribute their internal ip worldwide...

Why does it matter, don't you have a firewall?

Fine, I couldn't care less but other forum members might benefit from your insight.