Outgoing mail authentication repeatedly failing.

[Toby]

Server has been 'forgetting' passwords for email checks over POP, IMAP nor is webmail allowed to login (not the cpanel, the actual mail account).

exim fails under many, if not all, instances (example errors below).

It is affects multiple users in multiple locations.

The only way to get POP/IMAP logins working is to restart the services.

Without doing anything on the client-end mail then will send for about 20 minutes before password prompts return.

The datacenter has updated cpanel, repaired permissions, forced courier and pop installs, etc.

Would appreciate any help

Examples of failure messages:

===============================

imap failed @ Tue Nov 30 13:37:07 2010. 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__ ((snip))
<< *
BYE Temporary problem, please try again later imap: ** [* BYE Temporary
problem, please try again later != A001 OK]


===============================
exim failed @ Sat Nov 27 13:57:46 2010. A restart was attempted automagically.
Service Check Method: [tcp connect]

Failure Reason: TCP Transaction Log:
<< 220-host.dragonfly-media.net ESMTP Exim 4.69 #1 Sat, 27 Nov 2010 13:58:54 -0500
<<
<<
EHLO localhost
<< 250-host.dragonfly-media.net Hello localhost [127.0.0.1]
<<
<<
<<
<<
<<
AUTH PLAIN
((snip))
<< 435 Unable to authenticate at present
exim: ** [435 Unable to authenticate at present != 2]

===============================

imap failed @ Sun Nov 28 12:42:21 2010. 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___ ((snip))
<< * BYE Temporary problem, please try again later
imap: ** [* BYE Temporary problem, please try again later != A001 OK]

=====================


imap failed @ Wed Nov 24 13:08:17 2010. 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__ ((snip))
<< *
BYE Temporary problem, please try again later imap: ** [* BYE Temporary
problem, please try again later != A001 OK]

[partsace]

Did you ever get this solved?

Scott

[cPanelTristan]

Hello Scott,

If you are having a similar issue, please try changing the IMAP and POP client in WHM > Mailserver Selection area. It is likely courier, so try changing to dovecot if that's the case. If that does not work, try increasing the settings for the authentication daemons in WHM > Mailserver Configuration area.

Thanks.