Hi all, I am trying to figure out the best way to reject RCPT TO addresses with no domain part - i.e. "RCPT TO: <test>" or similar. I do not want to rewrite to $myhostname or $mydomain or similar.
I am on postfix 2.10. This is for an MSA function - if email passes validation checks and is authenticated, it is immediately sent to another system for delivery or transmission to remote networks. There is no local delivery on this server. Due to the nature of the system, any incoming mail without a domain is due to end user errors - so we want to reject it and present the client with an error message in the SMTP exchange. I have come up with some solutions which feel a lot like workarounds / hacks - i.e. checking for .*@$myhostname as a recipient and rejecting it, or something like that. Are there any better ways to achieve this? I was expecting to find an option, like "reject_no_domain" in recipient restrictions or something. What I've found is that recipient_restrictions checks the resolved recipient - not what the client presented. I note that reject_non_fqdn_recipient exists, however, I'd like to be able to accept mail addressed to user@gtld - for when people inevitably start doing that if they're not already. Thanks in advance ! -- Nathan Ward
