Facebook
Twitter
Daniel Slyman
Basic Pleskian
Hey guys,
so while testing my mailserver I discovered that postfix was not communicating its TLS capabilities to other receiving mail servers. I discovered this while sending an email to my gmail account, see attached image.
I of course don't know whether this is an isolated incident restricted to my setup, but by simply checking the presence of, or adding
smtp_tls_security_level = may
smtpd_tls_security_level = may
in
/etc/postfix/main.cf (for me on line 679)
will solve this problem, if you are running postfix as your SMTP server and if you actually secured postfix with a certificate - which can easily be done and is well documented.
Official documentation: Postfix TLS Support
Greetings,
Daniel
so while testing my mailserver I discovered that postfix was not communicating its TLS capabilities to other receiving mail servers. I discovered this while sending an email to my gmail account, see attached image.
I of course don't know whether this is an isolated incident restricted to my setup, but by simply checking the presence of, or adding
smtp_tls_security_level = may
smtpd_tls_security_level = may
in
/etc/postfix/main.cf (for me on line 679)
will solve this problem, if you are running postfix as your SMTP server and if you actually secured postfix with a certificate - which can easily be done and is well documented.
Official documentation: Postfix TLS Support
Greetings,
Daniel
