Server stop sending and receiving mail

[zyxxyz]

Hallo, everybody.

I'll try to explain my problem.

Running Release 6.0.5_GA_2213.UBUNTU8_64 OSE, users are using Thunderbird.

Half of the year everything was cool, after that time appeared a problem with several users - Thunderbird wrote that can't copy email to the folder "sent". "zmcontrol stop & zmcontrol start" could solve this problem but only for a couple of days.
I discover that there is a lack of memory on the server. And after reading about memory requirements i increased RAM size from 2Gb up to 8 Gb. (may be this information is useful).

After above 5-6 days server stop sending and receiving mail at all, with the same error from Thunderbird (can't copy email to the folder "sent"). This situation repeating every 5-6 days, server do the same - stopping send and receive mail. At that time it have more than 1Gb of free RAM and CPU usage at 10-20 percent (CPU is used by process "java", that also uses 16% of RAM)

Rebooting computer or making zmcontrol stop start helps, but i want to get rid of it as server stops right during the working day.

[Saturdays]

are there any errors in the log files at the time?

[zyxxyz]

nginx.log contain a lot of error like that
[error] 10376#0: *9626 auth http server 192.168.0.10:7072 timed out (110: Connection timed out) while in http auth state, client: 192.168.0.100, server: 0.0.0.0:993, login: "username"
this error apears from all users

[phoenix]

Originally Posted by zyxxyz

nginx.log contain a lot of error like that
[error] 10376#0: *9626 auth http server 192.168.0.10:7072 timed out (110: Connection timed out) while in http auth state, client: 192.168.0.100, server: 0.0.0.0:993, login: "username"
this error apears from all users

Why do you have the proxy installed on a single server (I'm assuming it's a single server as you've not mentioned anything else)?

[uxbod]

su - zimbra
zmprov gs `zmhostname` zimbraServiceEnabled

[zyxxyz]

Originally Posted by phoenix

Why do you have the proxy installed on a single server (I'm assuming it's a single server as you've not mentioned anything else)?

yes it's а single server with 2 domains
but i don't use proxy on it, it seems to be installed by default
where can i disable it?

[zyxxyz]

Originally Posted by uxbod

su - zimbra
zmprov gs `zmhostname` zimbraServiceEnabled

Here is list of running services
zimbraServiceEnabled: antispam
zimbraServiceEnabled: logger
zimbraServiceEnabled: mailbox
zimbraServiceEnabled: memcached
zimbraServiceEnabled: mta
zimbraServiceEnabled: stats
zimbraServiceEnabled: imapproxy
zimbraServiceEnabled: snmp
zimbraServiceEnabled: ldap
zimbraServiceEnabled: spell

[zyxxyz]

i forget to menntion about such fact that:
when all this heppans in the list of processes i can see multiple java processes, instead of 1 when server works normally

[phoenix]

The proxy isn't enabled by default. Just for confirmation and to see what's installed/running follow all the instructions below:

zmproxyctl status
zmprov gs `zmhostname` | grep zimbraServiceEnabled
zmprov gs `zmhostname` | grep zimbraServiceInstalled

If it's in, then run this:

zmproxyctl stop
zmprov ms `zmhostname` -zimbraServiceEnabled imapproxy
zmprov ms `zmhostname` -zimbraServiceEnabled memcached
zmcontrol stop
zmcontrol start

To reset the ports run the following (on one line):

zmprov -l ms `zmhostname` zimbraPop3BindPort 110 zimbraPop3SSLBindPort 995 zimbraPop3ProxyBindPort 7110 zimbraPop3SSLProxyBindPort 7995 zimbraImapBindPort 143 zimbraImapSSLBindPort 993 zimbraImapProxyBindPort 7143 zimbraImapSSLProxyBindPort 7993

then restart

[zyxxyz]

Ok i'll try this on weekends.

but what else nginx is responsible for in zimbra server?