Question

11

ssmtp Cannot open mail.server.com:25

rated 0 times [ 11] [ 0] / answers: 1 / hits: 57843 / 3 Years ago, mon, may 31, 2021, 11:43:53

I am trying to configure ssmtp on our Ubuntu 12.04 server. However I had no luck so far. My ssmtp.conf looks like this:

[email protected]

mailhub=mail.server.com:25

rewriteDomain=

hostname=hostname.server.com

AuthUser=me

AuthPass=mypassword

UseTLS=YES

FromLineOverride=YES

When I try to send mails I get ssmtp: Cannot open mailhub:25. When I use sudo the error message reads a little different ssmtp: Cannot open mail.server.com:25
The server should normally accept SMTP on port 25 and I can contact it with telnet mail.server.com 25. Any ideas would be greatly appreciated.

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fatuatexen

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answered 3 Years ago bsorbedeldy · Accepted Answer

Ok I figured it out... I had to use UseSTARTTLS=YES instead of UseTLS=YES. Also I had to enter root:[email protected]:mail.server.com:25in /etc/ssmtp/revaliases. Hope this helps others as well.

If you want to use other user accounts than root, you will have to add those to /etc/ssmtp/revaliases as well and add them to the 'mail' group.