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Imap error: Service Check Method: [tcp connect]

Posted on: August 19, 2015

If you are on cpanel server you might encounter errors related to imap. Below given is an example of error you might encounter.

Imap error: Service Check Method: [tcp connect]

The /var/log/maillog will show the additional errors as well.

imap failed @ Sat Dec 20 00:18:56 2008. A restart was attempted automagically.
Service Check Method:  [tcp connect] 

Failure Reason: TCP Transaction Log: 
<< * OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION STARTTLS] Courier-IMAP ready. Copyright 1998-2008 Double Precision, Inc.  See COPYING for distribution information.
>> >> A001 LOGIN __cpanel__service__auth__imap__PNIT3F....NZI
<< * BYE Temporary problem, please try again later
imap: ** [* BYE Temporary problem, please try again later != A001 OK]


Cmd Service Check Raw Output: 

Solution:

The issue can be fixed by increasing the authentication daemons for courier in the server.

Follow the below given steps:

Login to WHM

Service configuration

Mail server configuration

Number of authentication Daemons (Increase the current value to higher)

 

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