TLS is required, but was not offered by host

    Hi,

    I am getting following error message while sending emails to some domains.

    "TLS is required, but was not offered by host"


    In postfix log I am getting following :

    86F8C36C0816: to=<xxx@xxx.pl>, relay=mail.h-email.net[54.203.167.158]:25, delay=5.1, delays=0.38/0.22/4.5/0, dsn=5.7.4, status=bounced (TLS is required, but was not offered by host mail.h-email.net[54.203.167.158])


    I found solution on iRedMail forum to set : "-o smtp_tls_security_level=none" in postfix configuration "/etc/postfix/master.cf": but this will practically disable security.


    Can You help me please?

    Kind regards,

    Piotr

    Quote from heavygale

    Did you enable "Enforce TLS outgoing" for the Mailbox? (Login to mailcow UI with the email-address to check.)

    Or did you configure any "TLS policy maps" ?

    Thank You for a hint.:)

    Heavgale - indeed someone turn this settings on and clearly didnt know what consequences it brings! THANK YOU. It seems this solve the issue!