[imp] Pop lock busy

[Nigl Andreas]

Hello List,

We are using Horde and Imp as our Webmailer. Imp Authentication and  
email fetching is done against the qpopper pop3 Server (ssl). If the  
mailbox of our users is too big (approximatly 30 MBytes and more), the  
authentication failes.

Pop3 Server Log:

"pop lock busy, is another session active".

Horde Log:

Nov 18 15:38:37 HORDE [notice] [imp] Login success for user  
[IP-Address] to {pop3.domain:995} [on line 154
of "/srv/www/htdocs/horde/imp/redirect.php"]

Nov 18 15:38:39 HORDE [error] [imp] FAILED LOGIN IP-Address to  
pop3.domain.de:995[pop3/ssl/novalidate-cert] as user [on line 258 of  
"/srv/www/htdocs/horde/imp/lib/Auth/imp.php"]

The menu on the left side of imp is as if the user is logged in, but  
the content area shows the login screen.

The command "top" on the pop3 server shows that imp is contacting the  
pop3 server two times in a row.

We are using Imp Version 4.1.6 and Horde Version 3.1.9

Thanks in advance

Andreas