I think that the very first script I wrote, for public consumption, was a transport sink for Exchange 2000 that implemented a catch-all mailbox. :)
That was a long, long, time ago... I can still remember how... But things have changed in the last 15 years. :) -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Kurt Buff Sent: Wednesday, February 12, 2014 3:20 PM To: [email protected] Subject: Re: [Exchange] Spam and Postmaster Question Well, yes, and I believe that postmaster@ must be assigned to a mailbox. And, as a matter of fact I do have postmaster assigned to an account here, as well as abuse@ and security@ and a couple of others, per the RFC. I was only speaking to the advisability of using postmaster as a catchall address, or using catchalls in general, and that postmaster@ is not used for NDRs. Exchange is a powerful tool, and like any powerful tool can be misused, to great detriment. Kurt On Wed, Feb 12, 2014 at 12:08 PM, Michael B. Smith <[email protected]> wrote: > You CAN assign the postmaster address to a mailbox, if you wish. > > You can also create a quarantine mailbox that is used to store certain > kinds of spam. > > Exchange is quite configurable. :-) > > Sent from my Windows Phone > ________________________________ > From: Kurt Buff > Sent: 2/12/2014 2:49 PM > To: [email protected] > Subject: Re: [Exchange] Spam and Postmaster Question > > On Wed, Feb 12, 2014 at 10:29 AM, Geoff Orlebeck > <[email protected]> > wrote: >> We recently replaced a new client’s SBS 2003 with Exchange 2010 SP3 UR4. >> There is a user asking bout gaining access to Postmaster mailbox for >> spam review. Am I crazy, or is the postmaster only used for NDR >> delivery/replies? >> This client has spam filtering provided by their web host (we are >> working on changing that as well). But she states she previously >> accessed [email protected] for their spam emails. I just want to >> make sure before I reply back that I’m not off base here. The >> ExternalPostmasterAddress property is designed for NDR and not spam, >> correct? No spam emails will go and sit in the postmaster mailbox >> defined on Exchange….right? > > > You are sort of correct.Using the postmaster@ address as a catchall is > normally a mistake. However, NDRs are usually delivered with a null > sender address, not with postmaster@. > > Well, I'd argue that using a catchall address is a mistake anyway, but > that's a whole other discussion. > > See https://www.ietf.org/rfc/rfc2142.txt for recommendations and > requirements regarding standard email system accounts (I believe this > is still the current RFC - but I haven't kept up for a few years). > > See also these fairly helpful links for a bit more info: > http://en.wikipedia.org/wiki/Bounce_message > > https://www.roe.ch/MTA_BCP > > Kurt > >
