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hi, we have been using kerio connect for 1 year plus. recently user complaint that the email is getting seriously delay. it could be delay up to 3 hour.
kerio connect running on centos, we have 80 users, receiving mail scheduler interval is 15mins.
i had check the email hosting, the mail actually is arrived, just that the kerio haven't go to collect it.
when i check on the debug log within the kerio, found something unusual, not sure is it cause by this, there are some user takes long time on receiving and deleting the mail from email hosting

this is some example log:

[06/Aug/2012 17:17:03][14148] {pop3c} Retrieving message no. 1, UID: UID26225-1294910974 from
[06/Aug/2012 17:17:07][14148] {pop3c} Message no. 1 (1566351 bytes) received from server
[06/Aug/2012 17:17:07][14148] {pop3c} Deleting message no. 1 from
[06/Aug/2012 17:17:07][14148] {pop3c} Retrieving message no. 2, UID: UID26226-1294910974 from
[06/Aug/2012 17:17:09][14148] {pop3c} Message no. 2 (1194339 bytes) received from server
[06/Aug/2012 17:17:09][14148] {pop3c} Deleting message no. 2 from
[06/Aug/2012 17:17:09][14148] {pop3c} Retrieving message no. 3, UID: UID26227-1294910974 from
[06/Aug/2012 17:17:17][14148] {pop3c} Message no. 3 (4540513 bytes) received from server
[06/Aug/2012 17:17:17][14148] {pop3c} Deleting message no. 3 from
[06/Aug/2012 17:17:17][14148] {pop3c} Retrieving message no. 4, UID: UID26228-1294910974 from
[06/Aug/2012 17:17:28][14148] {pop3c} Message no. 4 (3200792 bytes) received from server
[06/Aug/2012 17:17:28][14148] {pop3c} Deleting message no. 4 from
[06/Aug/2012 17:17:28][14148] {pop3c} Retrieving message no. 5, UID: UID26229-1294910974 from
[06/Aug/2012 17:17:50][14148] {pop3c} Message no. 5 (2047584 bytes) received from server
[06/Aug/2012 17:17:50][14148] {pop3c} Deleting message no. 5 from
[06/Aug/2012 17:17:51][14148] {pop3c} Retrieving message no. 6, UID: UID26230-1294910974 from
[06/Aug/2012 17:17:53][14148] {pop3c} Message no. 6 (395826 bytes) received from server
[06/Aug/2012 17:17:53][14148] {pop3c} Deleting message no. 6 from

normally it takes about 1 second to complete the receiving and deleting process.

i have tried to restart the services (pop3, smtp etc), and even restart the server, but no luck.
also test the connection between my side to email hosting by using email client (pop3), the connection is fine.

anyone can help?
thank you!


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From your log I see that the messages that are 4 MB / 3 MB take some seconds to download which is normal.

I don't think this is the reason for a 3 hour delay.

Check if there are some huge messages on the POP3 server that are slowing down the download.

Dexion AG - The Blackberry Specialists in Switzerland
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