I have a mail server that should receive all mails, even if no user is existing.
my big problem is the: Postfix Address Verification like mentioned here: http://www.postfix.org/ADDRESS_VERIFICATION_README.html
Servers that use that kind of recipients verification, wont send me mails if there is no user to receive these mails.
As mentioned in the Postfix Readme, to verify a recipient, the server
I get asked day by day to verify if a mail was successfully sent out by our server (because client complains that he sent it to xy and his recipient never got it). Most likely this isn't our fault but the recipients mail server dropped/flagged the mail as spam.
I have been at this for a couple of hours, and apparently I am missing something in newer postfix versions. I have the server set up, and it works locally but when I try to send from a remote network through the submission port, I always get "Relay access denied".