I don't believe there is any way to do this at this time but I thought I would ask anyway. I am looking at using smtpd(8) to be a "backup" mx where it essentially accepts mail for me and then when another machine is back online it sends the mail on to that machine. I know this can easily be done without verifying addresses but I would like to be able to verify that the addresses exist. This is similar to Postfix's relay_recipient_maps parameter. I know I can do this with other software but smtpd(8) is fantastic and I would really like to stick with it. Doing the job of a standard backup mx would be something like:
accept from all for domain "example.com" relay Is there any way to use a map to verify that u...@example.com exists? I don't want to accept a bunch of spam for nonexistentu...@example.com just for the primary mail server to reject it all later. Thank you. Bryan
