My e-mail server is running Postfix 2.11.3 on Debian 8.7 (Jessie) with Spamassassin 3.4.0.
I realized that my outgoing e-mails are also being checked for spam, which not only seems to be unnecessary to me, it also adds headers to the e-mail which I would prefer to not be added.
Whenever I send an e-mail I see a line in my logfile that looks something like this:
postfix/pipe [...] to=<...>, relay=spamassassin, delay=0.73, delays=0.22/0/0/0.51, dsn=2.0.0, status=sent (delivered via spamassassin service)
In my main.cf there is no word about Spamassassin and in my master.cf I explicitly only include it as an option in the smtp service:
smtp inet n - n - - smtpd
-o content_filter=spamassassin
The submission service doesn't have that option.
Why is Postfix delivering the e-mail via the Spamassassin service instead of directly connecting to the recipient?
