On Tue, Aug 30, 2022 at 02:25:20PM +0000, Frank Brendel wrote: > So I can try to reproduce it by simply putting that file into the > incoming queue?
Within the same filesystem, yes. > Our test system has FreeBSD 13.1 and Postfix 3.7.2 installed. I'd try > to resend a mail via that system. If you're copying queue files between systems, make sure to stop Postfix on the target system, and run "postsuper -s" as root after copying the queue file. Queue file permissions need to be 0700 to make the message deliverable, the owner needs to be the "$mail_owner" user (typically "postfix"). -- Viktor.