[horde] IMAP Badlogin

[Simon Wilson]

My Horde log gets these (at ERROR level) about every 5 minutes:

2011-05-26T16:40:07+10:00 ERR: HORDE [imp] IMAP server denied  
authentication. [pid 4479 on line 343 of  
"/var/www/horde4/imp/lib/Imap.php"]
2011-05-26T16:40:14+10:00 ERR: HORDE [imp] IMAP server denied  
authentication. [pid 4479 on line 343 of  
"/var/www/horde4/imp/lib/Imap.php"]

My IMAP server has the following matching entries:

May 26 16:40:01 server04 imap[29973]: accepted connection
May 26 16:40:01 server04 master[30004]: about to exec  
/usr/lib/cyrus-imapd/imapd
May 26 16:40:01 server04 imap[30004]: executed
May 26 16:40:01 server04 imap[29973]: mystore: starting txn 2147486191
May 26 16:40:01 server04 imap[29973]: mystore: committing txn 2147486191
May 26 16:40:01 server04 imap[29973]: starttls: TLSv1 with cipher  
AES256-SHA (256/256 bits new) no authentication
May 26 16:40:01 server04 saslauthd[1516]: do_request      : NULL  
password received
May 26 16:40:01 server04 imap[29973]: badlogin:  
server06.simonandkate.lan [192.168.1.170] plaintext simon SASL(-13):  
authentication failure: checkpass failed
May 26 16:40:04 server04 saslauthd[1516]: do_request      : NULL  
password received
May 26 16:40:04 server04 imap[29973]: badlogin:  
server06.simonandkate.lan [192.168.1.170] PLAIN [SASL(-13):  
authentication failure: Password verification failed]
May 26 16:40:08 server04 saslauthd[1516]: do_request      : NULL  
password received
May 26 16:40:08 server04 imap[29973]: badlogin:  
server06.simonandkate.lan [192.168.1.170] plaintext simon SASL(-13):  
authentication failure: checkpass failed
May 26 16:40:11 server04 saslauthd[1516]: do_request      : NULL  
password received
May 26 16:40:11 server04 imap[29973]: badlogin:  
server06.simonandkate.lan [192.168.1.170] PLAIN [SASL(-13):  
authentication failure: Password verification failed]

It's not ActiveSync, as I have that turned off at the moment due to  
other issues (it's just stopped working completely today).

No client access logged in httpd at that time.

Line 343 of Imap.php is:

             $error = new IMP_Imap_Exception($e);

Bug?

-- 
Simon Wilson
M: 0400 12 11 16