PR_EMAIL_ADDRESS
Hi MSO, I have some questions around what specific conditions will cause PR_EMAIL_ADDRESS be populated by an SMTP address and when will it have an Exchange DN. I see that sometimes messages sent between exchange servers do not resolve the recipients properly. I am looking for individual documentation concerning exchange 2003 as well as exchange 2007. Do you have any documentation which may help? Thank you,
July 29th, 2010 11:23pm

My understanding is that PR_EMAIL_ADDRESS will only be populated by an SMTP address if there is no corresponding mail-enabled or mailbox-enabled recipient in the organization. Is that not the behavior you are seeing? Alexei
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July 29th, 2010 11:45pm

Hi, Are talking about how Email Addresses are shown in GAL in Outlook?Laeeq Qazi|Team Lead(Exchange + Sharepoint + BES + DynamicsCRM) www.HostingController.com
July 29th, 2010 11:52pm

Hi Alexi/Laeeq, Yes, i wasn't specific enough. So, whenever Exchange successfully does an AD lookup for a recipient, it will set PR_ADDRTYPE to “EX”. When it can’t find a recipient, that recipient is treated as an external and PR_ADDRTYPE is set to SMTP. It is possible to setup an AD entry for an external person. This allows users in a company to specify a recipient for an email without having to know their email address, just as if they were internal. In this case, Exchange will also set PR_ADDRTYPE to EX. In that case, we would have a message with an external recipient and no SMTP address in PR_EMAIL_ADDRESS. If on separate domains Company A specified any Company B users as contacts in their AD, then PR_EMAIL_ADDRESS SMTP address would be empty. Now if Company A and Company B are on the same domain, under what conditions would PR_ADDRTYPE be populated with EX or SMTP . The answer is like you mentioned if the recipient can not be resolved, but under normal conditions the recipient should always be resolved. What would cause the field to be populated one way than another? Thank you,
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July 30th, 2010 1:58am

Hi bespokehero, The PR_EMAIL_ADDRESS property of the Mail-Recipient object returns the Exchange (EX) type e-mail address by default. Those mail-recipient which is internet would be set as smtp. What do you mean "It is possible to setup an AD entry for an external person." Do you mean you create contact for the external user? Sure, if you add the external users as contacts, when you resolve it, it would be showed out. If the mailrecipient and the send in the same exchange domain forest, that is they use the same GC, I think it would populate with EX. Regards! Gavin
August 4th, 2010 6:23am

Hi Gavin, Thank you for your reply. Maybe I am approaching it from the wrong angle here. I was attempting to determine how an email from an external user would end up with the PR_EMAIL_ADDRESS set to EX. The setting of a contact was one example I am familiar with, and I am interested in other known conditions. From the other side what I am interested in are the known configurations/conditions which would cause the PR_EMAIL_ADDRESS to be set to SMTP when the recipient is internal. Regards, Zig
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August 20th, 2010 2:38am

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