Hello, Should I look in the source or is there a better location to change the texts returned by Postfix after the error code for a connecting MTA? I'd like to give custom messages back for (example) a failed rDNS check or helo check. I don't want to change the returned number (421 or 550 if I'm correct), just the message to point them to a page we own to get information about how to fix the error or request whitelisting for the check.
Changing the messages in the source isn't something I'd like to do, but if that is the location to change it I'll change it there. I didn't find it in the documentation (but I might have overlooked something). With kind regards, Mark Scholten
