I just installed the newest verson of DeltaChat and run into a problem with my mailserver (Mailcow):
504 5.5.2 <localhost>: Helo command rejected: need fully-qualified hostname; from=<xxx> to=<xxx> proto=ESMTP helo=<localhost>
Is there a way to tell DeltaChat to send a FQDN in the HELO phase of the connect? Would be great if I could make this work!
Thanks for any help in advance, Marc