Michael: Didn’t Exchange previously do that by default? Or at least it created the Postmaster mailbox as part of the Exchange 2003 install (or at least with SBS 2003)? I’m not very strong in Exchange yet, even more glaringly so with 2003 and older. I do remember Postmaster being around on those 2003 boxes we support(ed). However, because this customer has a third party spam filter, we just lock down the edge firewall and Exchange to the CIDR ranges from the spam company. Not sure (in this specific instance) it’s worth adding another layer to such a simple setup.
Exchange is certainly configurable?! I’ve found all sorts of ways to not configure it, too! :) -Geoff From: [email protected] [mailto:[email protected]] On Behalf Of Michael B. Smith Sent: Wednesday, February 12, 2014 12:09 PM To: [email protected] Subject: RE: [Exchange] Spam and Postmaster Question 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<mailto:[email protected]> Sent: 2/12/2014 2:49 PM To: [email protected]<mailto:[email protected]> Subject: Re: [Exchange] Spam and Postmaster Question On Wed, Feb 12, 2014 at 10:29 AM, Geoff Orlebeck <[email protected]<mailto:[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]<mailto:[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 This message and any attached documents may be privileged or confidential and contain information protected by state and federal privacy statutes. They are intended only for the use of the addressee. If you are not the intended recipient, any disclosure, copying, or distribution of this information is strictly prohibited. If you received this transmission in error, please accept our apologies and notify the sender.
