On Thu, 2007-08-23 at 14:24 +0200, Thibault VINCENT wrote: > - First case : s_client hangs on the first output "CONNECTED(00000003)" and > there is no handshake at all; > - Second case : like the first but the handshake starts after a few minutes; > - Third case : the handshake goes fine but the "OK" server banner is never > sent (no response to commands); > - Fourth case : the greeting banner is received but dovecot will never answer. > > The configuration file is almost identical to the default and SSL certificate > is not the autogenerated one. > Log files do not show dying process.
You could strace imap-login process to see what it's doing while the connection is hanging, and what changes when the handshake starts. Set login_processes_count=1 to make it easier to figure out what imap-login process to strace.
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