Wietse Venema via Postfix-users:
> You wrote that the old rhel7 server runs Postfix 3.3.6. That version
> did not implement smtp_tls_connection_reuse. It was introduced with
> Postfix 3.4 and is still disabled by default. Is there a problem
> that requires smtp_tls_connection_reuse support?
>
> I think that I will have to defer this to Viktor. Postfix programs
> shuold not segfault with any input or configuration, but it can
> take some effort to reproduce this independenty.
You can help us zoom in on the problem by logging the communication
between the Postfix SMTP client and the tlsproxy daemon.
Commands:
postconf 'smtp_tls_connection_reuse = yes'
postconf -F 'tlsproxy/unix/command = tlsproxy -v"
postfix reload
Then make one failing delivery, capture the tlsproxy logging, maybe
censor the sender and recipient, and send the result to Viktor and me.
To revert the above commands:
postconf 'smtp_tls_connection_reuse = no'
postconf -F 'tlsproxy/unix/command = tlsproxy"
postfix reload
Wietse
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