Debian – sSMTP: Cannot open smtp server

debianemailssmtp

This is not a duplicate, I'm aware of the other question and it didn't help me.

Here's my ssmtp.conf:

root=info@mydomain.com
rewriteDomain=mydomain.com
hostname=myHostnameHere
FromLineOverride=YES
AuthUser=info@mydomain.com
AuthPass=myPasswordHere
AuthMethod=LOGIN
FromLineOverride=YES
mailhub=mail.mymailhost.com:465
UseSTARTTLS=YES
UseTLS=YES
TLS_CA_Dir=/usr/share/ca-certificates/mozilla/

I also tried telnet-ing to the server, and it worked, so the port and the host are correct (here it is redacted).

The problem is:

sSMTP[{PID}]: STARTTLS not working
sSMTP[{PID}]: Cannot open mail.mymailhost.com:465

Executed command: echo "This is a test" | mail -s "Test" mygmail@gmail.com

Response: mail: cannot send message: Process exited with a non-zero status

OS: debian

Best Answer

Either

  • disable TLS and / or StartTLS in your ssmtp config

or

  • fix TLS and / or StartTLS on mail.mymailhost.com.
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