I am using dovecot-0.99.10.5-1 on RHEL 3 for x86-64:

$ uname -a Linux localhost 2.4.21-15.ELsmp #1 SMP Thu Apr 22 00:09:01 EDT 2004 x86_64 x86_64 x86_64 GNU/Linux

The client is Horde-2.2.5/IMP-3.2 on Fedora Core 2 on i386.

At random imap-login fails with the following error message:

$ grep imap /var/log/maillog:

Jun 15 18:01:08 anne imap-login: Login: terjeros [10.0.0.1] Jun 15 18:01:17 anne imap-login: Login: terjeros [10.0.0.1] Jun 15 18:15:25 anne imap-login: Login: terjeros [10.0.0.1] Jun 15 18:15:25 anne imap-login: SSL_accept() failed: error:1409C041:SSL routines:SSL3_SETUP_BUFFERS:malloc failure [10.0.0.1] Jun 15 18:15:47 anne imap-login: Login: terjeros [10.0.0.1] Jun 15 18:15:47 anne imap-login: SSL_accept() failed: error:1409C041:SSL routines:SSL3_SETUP_BUFFERS:malloc failure [10.0.0.1] Jun 15 18:16:00 anne imap-login: Login: terjeros [10.0.0.1] Jun 15 18:16:00 anne imap-login: SSL_accept() failed: error:1409C041:SSL routines:SSL3_SETUP_BUFFERS:malloc failure [10.0.0.1] Jun 15 18:16:25 anne imap-login: Login: terjeros [10.0.0.1] Jun 15 18:17:35 anne imap-login: Login: terjeros [10.0.0.1] Jun 15 18:19:43 anne imap-login: SSL_accept() failed: error:1409C041:SSL routines:SSL3_SETUP_BUFFERS:malloc failure [10.0.0.1] Jun 15 18:52:01 anne imap-login: Login: terjeros [10.0.0.1] Jun 15 18:52:01 anne imap-login: SSL_accept() failed: error:1409C041:SSL routines:SSL3_SETUP_BUFFERS:malloc failure [10.0.0.1] Jun 15 18:52:31 anne imap-login: Login: terjeros [10.0.0.1] Jun 15 18:52:53 anne imap-login: Login: terjeros [10.0.0.1] Jun 15 18:53:33 anne imap-login: Login: terjeros [10.0.0.1] Jun 15 18:54:30 anne imap-login: SSL_accept() failed: error:1409C041:SSL routines:SSL3_SETUP_BUFFERS:malloc failure [10.0.0.1]

The box has plenty of memory: $ free | grep Mem Mem: 4016976 3696888 320088 0 731608 2279704

Any ideas? OpenSSL or dovecot issue?

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