This is a very weird problem. I did a standard apt-get upgrade on Debian and got Courier IMAP 4.9.3-4. On upgrade all worked fine, however within 2 hours the imapd stopped acknowledging successful logins. When it works, it returns "1 OK LOGIN Ok.". When it stops working, it returns nothing. The state, as I know it, is thus:
* It will acknowledge and log failed logins * It will not acknowledge or log successful logins and it will not accept commands after a valid login is supplied * The auth backend is mysql, which it successfully queries * It clearly knows the difference between good and bad logins as it never fails to acknowledge bad ones Courier pop3 works fine, even when imap is failing. A reboot fixes the issue for a random period of time - typically no more than 2 hours. Nothing is logged that would indicate why it is doing this. I have downgraded back to 4.8.0-3 and the issue still exists. I don't recall the version that it was on pre-upgrade, it may well have been less than 4.8.0-3. Anyone have any clue what might be causing this? Phil [cid:image001.jpg@01CD26F6.B473CA30] Phil Lavin | Developer Tel: 01788 566 270 | Web: www.propcom.co.uk<http://www.propcom.co.uk/>
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