POP3 timeout, IMAP OK

[Bagt]

Hello,

I have Redhat Enterprise AS 3.0 ( update 2 not installed ) and Cyrus-imap 
2.2.3-8 ( from RPM Simon Matter ) + SASL + PAM + OpenLDAP

Yesterday for the first time I have problem with POP3 server.

--------------------------------
 > telnet localhost 110
+OK Cyrus POP3 v2.2.3 server ready
user username
+OK Name is a valid mailbox
pass password


wait wait and wait and timeout
--------------------------------

No error in logs files. Same problem for all users.

If I connect with Webmail (IMAP port), no problem I can see all messages.

I restart all service ( saslauthd,ldap,cyrus-imap ) and the problem 
persists, I reboot the server and it's OK.

Any idea ?

Thanks

Bagt

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