Hi,
Can I see in my log if an outgoing mail to an external server was encrypted?
Our postfix logs something like this for outgoing connections:
2025-12-10T00:05:12.267944+01:00 postbote postfix/smtp[2835939]: Trusted
TLS connection established to mail.xxxxxxxxxx[185.xxx.xxx.xxx]:25:
TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange
X25519 server-signature RSA-PSS (4096 bits)
This is postfix/smtp, not smtpd as in your e-mail.
postfix/smtpd handles incoming connections. Looks here like this:
2025-12-10T00:05:17.608532+01:00 postbote postfix/smtpd[2835935]:
Anonymous TLS connection established from xxxxxxxx[81.xxxxxxx]: TLSv1.3
with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519
server-signature RSA-PSS (4096 bits)
So your piece of log is an incoming connection, not secured by tls and
using plain authentication (sasl_method=plain).
Groetjes
Claus
--
Claus R. Wickinghoff, Dipl.-Ing.
using Linux since 1994 and still happy... :-)
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