David Lemson's WebLog

Product Unit Manager, Exchange

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  • Blog Post: ResolveP2, RerouteViaStore, and its equivalent in Exchange 2003

    Recently I have encounted a number of people who asked what the ResolveP2 reg key in Exchange 5.5 was meant for, and how to emulate it in Exchange 2003. -- ResolveP2 in Exchange 5.5 ResolveP2 tells the Exchange server “when the server is storing MIME content, and needs to convert it to...
  • Blog Post: Sharing a domain between two Exchange orgs

    Luke asks : I am in the process of migrating from Exchange 5.5 to Exchange 2003 for a company that has multiple small (less than 5 users) branch offices. They want to migrate slowly, so here's my dilemma: The current Exchange 5.5 will still be active for a while. I'm using the Exchange Migration...
  • Blog Post: How do we decide what features make it in to Exchange?

    In a recent comment , Michel asks: How do you come up with a list of new features that are to be included in a new release? In a 'Meet the Expert' session here in the Netherlands last December, I discussed a problem for which ' the expert' knew a ' feature design request' was already on the list...
  • Blog Post: TechEd Day 1&2 from an Exchange perspective

    It’s been a huge couple of days for the Exchange team, especially the Exchange Mobile Sync team, which is in my group. In case you missed the news, at TechEd on Monday we announced Exchange 2003 Service Pack 2 as well as the Messaging and Security Feature Pack for Windows Mobile 5 . It’s so exciting...
  • Blog Post: How are you using the Windows 2003 POP3 Server?

    I saw a link on the “hellomate“ MS Exchange blog to a post singing the praises of the POP3 Server that comes in Windows Server 2003 and it reminded me that I wanted to write about this and ask people to comment or write, and tell me what you are using the POP3 server for, and how you like...
  • Blog Post: Treo 650 and Exchange ActiveSync

    I am sorely overdue in posting, and I apologize about that. I will hide behind the sorry excuse that the vast majority of what I do nowadays is work on an upcoming release of Exchange that we aren't talking about yet, so I feel like I can't blog all that much about my current work. But last week we had...
  • Blog Post: Want to work on mobile/web access technologies in the Exchange Team?

    See my post on the Exchange Blog for details on some job openings in my team. As a bonus, can you guess who I am channeling in the first paragraph? (hint: there's a lot of rhetorical questions)
  • Blog Post: The RFC 2821 "Covenant"

    In a recent comment , Mark Hicks asks: Is there a way to accept a message for an invlaid recipient and then delete it without generating an NDR to the (usually fake) sender? I still want to generate an NDR for my internal users when mail cannot be delivered to an external recipient. -Thanks. ...
  • Blog Post: Configure Exchange 2003 to check recipients in SMTP protocol

    For years, people have been asking me, "how can I make Exchange work just like sendmail, where it rejects invalid recipients during the SMTP protocol?"  Sendmail has historically not had a directory, and so checking if a recipient was valid was just a getpwnam() call, which is quick.  Of...
  • Blog Post: More from Michel on customer feedback

    In a comment to my last post , Michel says: It sure helps to demystify the process, but also shows there is no direct contact between developers and customers. PSS, a product group or reports form software tools are always 'in the middle'. I'm sorry that I gave you the impression that there is...
  • Blog Post: IMF settings

    Several people have commented or emailed me asking me for my IMF settings, since I mentioned that I am using the IMF on my personal mail server. There are basically three settings for IMF: The Spam Confidence Level threshold for acting at the gateway, as part of the SMTP conversation What to...
  • Blog Post: Server name != Domain name

    In a posting to the Windows in Higher Education Listserv , I was asked about a new behavior in Exchange 2003: Exchange System Manager prevents you from setting the domain name in a recipient policy to the same as the FQDN of any of your servers.  I was the driver behind that change so I take...
  • Blog Post: Okay, Okay, some Exchange content

    A new Exchange Hotfix is making the news  right now.  It's only for Exchange 5.5 servers, but you will want to evaluate whether or not you want to apply the hotfix before you start to have Outlook 2003 users (which launches Oct 21 ).  It does require a pretty complicated kind of rule...
  • Blog Post: HELLOMOTO

    Today, our second Exchange ActiveSync licensee announced their upcoming device with direct Exchange Server connectivity: Motorola and their upcoming A780 . Of course Motorola has several Windows Mobile devices (the now-shipping MPX 220 and upcoming MPx ) which, like all Windows Mobile devices, can also...
  • Blog Post: How are you using the Windows 2003 POP Server, Part II

    In a previous post , I asked people how they are using the Win2K3 POP server and what features they wish it had. One thing I'd like to get, especially from people who posted that they do use it today, is some more details on why and how they are using it. 1) It seems to me that a Windows Server license...
  • Blog Post: ResolveP2 flags

    In comments to my recent post on ResolveP2, several people asked me what the properties listed in http://support.microsoft.com/default.aspx?scid=kb;en-us;174755 meant in real terms. So I asked an Exchange developer and got the answer: From that KB article: ADDRESS_CONVERT_SENDER decimal value 1 =...
  • Blog Post: Catchall vs Check recipients

    We get two different common requests for features that we have solutions for, but it's funny that they are incompatible. I accidentally discovered this on my own Exchange 2003 server at home. Feature 1: “Catchall” mailbox The idea with this one is that you have people mailing you at...
  • Blog Post: Exchange Development at TechEd

    What have I been spending my time on this week? Polishing my presentation on Exchange Development! I'm presenting a MSG330:Exchange Development at TechEd San Diego this year, 5:30 pm Wednesday, room 32AB for those of you who are attending. Many of you have no doubt seen Mindy Martin give a presentation...
  • Blog Post: Blogging from TechEd: Exchange SP1 and IMF released

    I'm sure you've read it elsewhere, but here's one more link. It was hard to sit on this as people were commenting their lament over not being able to get IMF, but trust me, it's worth the wait. You can find both SP1 and IMF linked off of http://www.microsoft.com/exchange , and here's the IMF directly...
  • Blog Post: Exchange 2003 Tools & Updates

    From reading newsgroups and public lists, many Exchange customers aren't aware of our Tools & Updates web page.  With Exchange 2003, we actually removed many of the tools from the CD and moved them to the web.  The reason is so that customers would have one place to go for the latest...
  • Blog Post: HP Exchange 2003 Academies

    HP is starting a new round of Exchange 2003 Customer Academies and I wanted to give them some press, because I think they are a great way for customers to get deep knowledge about Exchange. I was involved in the development of the first (then Compaq) Exchange 2000 Academy in 1999, and have known the...