Roundcube vacation email not delivered

[mrmarkuz (Markus Neuberger)]

Maybe following threads are of help…

Force a sender address:

NS8 / SOGo : vacation message not working

I’m using a smarthost that refuses to send emails with no FROM address specified. Apparently by default dovecot sends auto replies without that FROM header set. That’s on purpose, to keep mail loops happening, but in my case that’s needed because of the smarthost policy. The fix is here, it forces dovecot to specify a FROM address :

DNS configuration issue:

SOGo - Vacation reply - Empty sender in header

Hi Markus, thanks for your support. No, I am using another smarthost - ASF Advanced Spam Filter, not Gmail. Still testing and trying to find out the solution. EDIT: After checking with some 3rd party tools SPF, DKIM, DMARC, there were syntax errors in my DNS configurations for domain. I copied DKIM again. There is still no header, but gmail accepts it. [ooo]