I just got bit by this, too. I recently set up a Debian Postfix server
and manually verified that the server was offering STARTTLS with the
correct cert. It was working correctly, so I assumed TLS working as
expected out-of-the-box. A month later, a friend notified me that Gmail
warned about
Package: postfix
Version: 2.9.6-2
Severity: normal
Dear Maintainer,
The default config for a newly installed Postfix supports inbound
STARTTLS, but it does not support outbound STARTTLS, even if the remote
host advertises support. I think the default Postfix config in Debian
should have this
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