We recently migrated to a new VPS (openSUSE 11.3) and configured several email accounts via PLESK. While the setup of the email clients worked like a charm we have many problems getting latest emails from the server via IMAP reliably. Sometimes it works sometimes not.
A look into /var/log/mail.err shows many lines like
Nov 30 18:11:32 s15433631 imapd: 1322676692.355090 DISCONNECTED, user=fiona@mysite.co.uk, ip=[64.167.158.35], headers=0, body=0, rcvd=175813, sent=831, maildir=/var/qmail/mailnames/mysite.co.uk/fiona/Maildir
or
Nov 30 18:12:51 s15433631 imapd-ssl: 1322676771.40654 DISCONNECTED, user=barney@mysite.co.uk, ip=[64.167.158.35], headers=0, body=0, rcvd=38, sent=239, maildir=/var/qmail/mailnames/mysite.co.uk/barney/Maildir
We tried to use IMAP via port 143 and 993 and in both the mail clients can sometimes download new mails and sometimes not.
What could go wrong on the server?
Many thanks!
