> By lot of admin you mean that it's not automated? That's sad indeed.
How would I automate "[someone with an account] just entered abc-xyz@domain into a web form to subscribe to something, add that to the valid alias file"?
Not really - that's a limited use alias. Doesn't really work for when you want to keep getting email from places. Also if I'm reading that correctly, spammers can just send mail to <randomword>.20.<knownaccount>@spamgourmet.com and you can't protect against those 20 spams.
How would I automate "[someone with an account] just entered abc-xyz@domain into a web form to subscribe to something, add that to the valid alias file"?