For a long time, I have continued to keep dbacher@battlebazaar.com as a valid mail address.  This was because a significant number of people had the address.

 For the last several years, I have been using a different address.  The battlebazaar.com address gets, on average, between 100 and 120 spam e-mails a day (yes, one account, yes a day).  Most of these are eaten, these days, by the domain black list and the SPF verification.  I've said it before and I'll say it again, if you aren't using SPF -- turn it on.  If you're sending me statements or w/e, then send them digitally signed.

There is a domain keys module now for the mail server; I may install that, or I may not.  My personal opinion is that domain keys does not really bring anything to the table above SPF, while it does introduce a lot more processing.  The reason I say that is that if I'm not accepting mail from an unauthorized server in the first place, then domain keys buys me very little.  The domain key is stored in the DNS, same as the SPF.  The only thing that Domain Keys brings to the table is an additional check that an authorized server is also sending via an authorized process.  But thats not the issue with the spam I see -- I see the spam being sent via unauthorized computers.  And I see more spam than anyone.

 For now, I've split the dbacher@battlebazaar.com account off as a separate mailbox, instead of delivering messages to my primary mailbox.  Once I've confirmed who still is using the older address, I will disable that account (similar to my john@battlebazzaar.net and john@battlebazaar.com accounts, that just mark mail as spam)