imap failures with odd Service Check Method: [tcp connect]

C

caeos

Well-Known Member
Jul 18, 2007
79
0
56
UK
all i can do is report the following code, not sure where to start.

Code: 
imap failed @ Wed Dec 17 04:36:25 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__fbLhliyoGycys72YXIjF55mQDhH5A17lf5dQpMeWBWqEePDFiZysGJN8MTrSdxTJ cx60piNsV_Yq7ChpLSqZsV1fKDHJ0DVNuteb__WtaBFUfGS4SHiovxuumWxggPCJ
<< * BYE Temporary problem, please try again later
imap: ** [* BYE Temporary problem, please try again later != A001 OK]
 
A

abrender

Active Member
Dec 5, 2002
37
0
156
Since the major cpanel upgrade a few nights ago we're seeing this sporadically as well on 2 servers - we can't reproduce it all the time
Code: 
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:
/var/log/maillog shows:
Dec 20 06:17:20 SERVERNAME imapd: authentication error: Input/output error

Any ideas of what we should check?
 
Last edited:
jdlightsey

jdlightsey

Perl Developer III
Staff member
Mar 6, 2007
126
2
243
Houston Texas
cPanel Access Level
Root Administrator
This just indicates that chkservd couldn't complete this particular login with the IMAP server. This might happen because the server was very heavily loaded at the time, because Courier has poor configuration settings, or for no really good reason at all.

I wouldn't worry about occasional failures of the new checkservd authentication checks, but if you that the failures are consistently repeated and frequent, it's worth looking into further. If you'd like to open a ticket we can take a closer look at your system to see if there is any identifiable pattern in the failures.
 
A

abrender

Active Member
Dec 5, 2002
37
0
156
jdlightsey said:
This just indicates that chkservd couldn't complete this particular login with the IMAP server. This might happen because the server was very heavily loaded at the time, because Courier has poor configuration settings, or for no really good reason at all.

I wouldn't worry about occasional failures of the new checkservd authentication checks, but if you that the failures are consistently repeated and frequent, it's worth looking into further. If you'd like to open a ticket we can take a closer look at your system to see if there is any identifiable pattern in the failures.
Click to expand...
Hi,

We're seeing this on 3 servers (all in OpenVZ vps's if that matters). It's not just random chkservd failings, customers are being promped for passwords because random AUTHs fail.

In /var/log/maillog we see:
Dec 20 06:17:20 SERVERNAME imapd: authentication error: Input/output error
 
A

abrender

Active Member
Dec 5, 2002
37
0
156
Yup, we have many servers running with no problem, but 3 with this "imapd: authentication error: Input/output error" error
 
A

abrender

Active Member
Dec 5, 2002
37
0
156
Courier - we don't want to switch to dovecot yet - we'd rather fix this problem instead of avoid it by using different software

Thanks
 
A

abrender

Active Member
Dec 5, 2002
37
0
156
jdlightsey said:
If you see these types of authentication failures repeated frequently, please open a ticket marked "ATTN: JD" so we can get a closer look at what's happening here.
Click to expand...
we saw 600/day on one server and 8000 on another after the big upgrade. I've changed them to dovecot and it looks okay now). Is this a known or reported issue?
 
H

habakuk

Member
Jan 2, 2007
7
0
151
Got a similar problem with imap

Hi,

since an hour got these mails all ten minutes. can´t get this to fix, whats happend?

Code: 
imap failed @ Tue Dec 23 01:13:14 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__QQkfuINM7FYn9ivM5SHxjppVKiJSy_BCUu_gzi_A0HJ05mHiT0aPAC09n0aTiUhC 6xQntoqSkI7OflLn1IjVISb3NFopYTUvgzfImgbatb2c2ATudb0eJ33Kk70LqGmQ
<< A001 NO Login failed.
imap: ** [A001 NO Login failed. != A001 OK]


Cmd Service Check Raw Output:
Actual cPanel:
cPanel 11.24.4-R32486 - WHM 11.24.2 - X 3.9
FEDORA 6 i686 on standard

can someone help?
thanks
 
G

gopihere

Member
Jul 30, 2007
12
0
51
>>IMAP worked with dovecot, so seems to be some problem with the courier build.

How you made IMAP worked wth dovecot?
 
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