Problems sending email

When I try to send email, the following error returns:

relay = []: 587, delay = 0.74, delays = 0.1 / 0.02 / 0.43 / 0.19, dsn = 5.7.0, status = bounced (host [] said: 530 5.7.0 Must issue a STARTTLS command first. m103sm5763046qkh.20 - gsmtp (in reply to MAIL FROM command))

Do you know where I might be going wrong?

Best Regards,
Michael Voigt

The target host requires authentification (username/ password) through TLS.

So you have to check the postfix (?) configuration.

See here:


I found out here, the problem was tls_policy.db
I needed to run the postmap tls_policy
Now it works fine.

Best Regards,

Michael Voigt