Viktor Dukhovni: > On Fri, Apr 17, 2020 at 02:28:10PM +0200, Vieri Di Paola wrote: > > > One of these mailbox servers has indeed the same "SMTP name" as one of > > the Postfix servers. In this case, I do get a message like this in the > > log: host XXX greeted me with my own hostname YYY > > > > However, it's only a WARNING, and I didn't see this message in my > > previous logs (the ones I posted earlier). > > This is why upthread I requested collate output for the failed delivery, > which should have included the warning, and yet I don't recall seeing > you post that. This could have been solved earlier... :-(
Also, Postfix bounce messages WILL NOT reveal details of configuration mistakes, because that would reveal internal information to strangers. Details of configuration mistakes can be found ONLY in the logs. Wietse