Blocked incoming emails on zimbra. What could be the reason?

Good day
There are two servers on Centos 7, single - server zimbra, the second home gateway/router. Once a day you block incoming server-Zimbra. Be treated by restarting iptables gateway. Locks up consistently in the morning. Checked all the startup scripts. There is a suspicion on fwrules.sh but in the logs says that everything runs without error. And it is unclear why restart all treated. Please help, or in what direction to look
April 7th 20 at 10:47
1 answer
April 7th 20 at 10:49
Little information - which ports are open 443 or 80? Zimbra behind NAT or port forwarding? Make a cron job to restart.
both ports are open, the Zimbra server is configured using forwarding to external ip. Here the problem is that if the mood via cron a restart of the gateway will fall telephony and iiko for deleted and restored will be long. Telephony and harmful, it happens after a restart regaetsya half of the hosts. Posherstiv the Internet, but not found a description how to restart iptables through crone - cali.Predovic commented on April 7th 20 at 10:52
you can just network - service network restart.
Telephony and harmful, it happens after a restart regaetsya half of the hosts
Even more difficult was - I have h323 and SIP live on the same network and rise quickly. It's still in the gateway. It's hard on the fingers, may simply not have correctly configured routing. I had a similar case, the network card was blocked with the increase in traffic, but was cured by replacing the card. If you can find any computer with 2 slivkami as options to try Kerio or pfsense is also. - Hayley.Fisher commented on April 7th 20 at 10:55

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