all of a sudden my Secure mailhost rfuses to connect to my postfix: Unable to send mail: The read operation timed out traceback: Module Products.SecureMailHost.SecureMailHost, line 173, in send Module Products.MailHost.MailHost, line 144, in send Module Products.SecureMailHost.SecureMailHost, line 282, in _send Module Products.SecureMailHost.mail, line 106, in send Module smtplib, line 390, in ehlo Module smtplib, line 344, in getreply Module smtplib, line 159, in readline sslerror: The read operation timed out and in the postfix log: Apr 10 17:49:45 www.example.net <info> postfix/smtpd[13667]: connect from localhost.localdomain[127.0.0.1] Apr 10 17:49:55 www.example.net <info> postfix/smtpd[13667]: lost connection after EHLO from localhost.localdomain[127.0.0.1] Apr 10 17:49:55 www.example.net <info> postfix/smtpd[13667]: disconnect from localhost.localdomain[127.0.0.1] this only happens in my plone 2.1.2 Instance, the 2.0.5 and 2.1.1 Instances have no problem at all (on the same machine, using the same smtpd) so this is not firewall related. The only change in the configuration was that I installed ZMySQL DA any pointers? christian