I have created mailbox in the system. It does show and User is able to login and send e-mails with no problems. But Others try to send her e-mails they get rejected e-mail. "The e-mail address you entered couldn't be found. Check the address and try resending the message. If the problem continues, please contact your helpdesk." "IMCEAEX-_O=ONBOARD+20ORGANIZATION_OU=EXCHANGE+20ADMINISTRATIVE+20GROUP+20+28FYDIBOHF23SPDLT+29_CN=RECIPIENTS_CN=Jill+20Wilson2dc42684@abcompany.com #550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##" Thanks

On Wed, 9 Feb 2011 16:23:47 +0000, Mr.Kris wrote: >I have created mailbox in the system. It does show and User is able to login and send e-mails with no problems. But Others try to send her e-mails they get rejected e-mail. > >"The e-mail address you entered couldn't be found. Check the address and try resending the message. If the problem continues, please contact your helpdesk." > >"IMCEAEX-_O=ONBOARD+20ORGANIZATION_OU=EXCHANGE+20ADMINISTRATIVE+20GROUP+20+28FYDIBOHF23SPDLT+29_CN=RECIPIENTS_CN=Jill+20Wilson2dc42684@abcompany.com #550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##" From where are the sender's getting the recipient's address? Is it from the GAL, for the OAB, are they replying to an old e-mail? The problem is that the legacyExchangeDN in the sent e-mail isn't the legacyExchangeDN assigned to the user. Given the string of characters in the last part of the address, I'd guess that the mailbox has been deleted and recreates one, or more, times. --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

Yes, e-mail account is deleted three times 'coz of the issue not for any other reason. I was hoping recreating the account will resolve but it didn't.

On Thu, 10 Feb 2011 01:19:03 +0000, Mr.Kris wrote: >Yes, e-mail account is deleted three times 'coz of the issue not for any other reason. I was hoping recreating the account will resolve but it didn't. No, it won't. But selecting the address from the GAL will (the OAB will eventually have the correct address, but not until the OAB is regenerated and all the clients download a copy). Adding these addresses to the mailbox's "E-Mail Addresses" tab as custom "X500" address tyoes should take care of the problem: /O=ONBOARD ORGANIZATION/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBOHF23SPDLT)/CN=RECIPIENTS/CN=Jill Wilson2dc42684@abcompany.com /O=ONBOARD ORGANIZATION/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBOHF23SPDLT)/CN=RECIPIENTS/CN=Jill Wilson2dc42684 --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

Hi Mr.Kris, Any update for your issue? Rich gave some good information. Regards! Gavin TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Looks like We can e-mail her now both via OWA and Outlook without any changes. Not sure how? Didn't understand Rich comment with respect X500 addresses. I did manually update OAB and GAL but none of those helped where problem UserA was reachable. But UserB when used OWA was able to reach UserA using GAL.

I hate to do a me-too, but this is a me-too situation. I'm trying to format the X500 address, but this is what is coming back when email bounces. The user left the organization during our Exchange 2003 days a year ago. Came back after the account was deleted and we migrated to 2010. Error when they bounce: IMCEAEX-_O=SCXXX_OU=First+20Administrative+20Group_cn=Recipients_cn=myuser@mydomain.com I have tried a few iterations, but I think my format is just wrong. This is my current redacted attempt at making the X500 address: /O=SCXXX/OU=First Administrative Group/CN=Recipients/CN=myuser@mydomain.com Where am I going wrong? Exhcange 2010 SP1. Thank you. --Arnie

I hate to do a me-too, but this is a me-too situation. I'm trying to format the X500 address, but this is what is coming back when email bounces. The user left the organization during our Exchange 2003 days a year ago. Came back after the account was deleted and we migrated to 2010. Error when they bounce: IMCEAEX-_O=SCXXX_OU=First+20Administrative+20Group_cn=Recipients_cn=myuser@mydomain.com I have tried a few iterations, but I think my format is just wrong. This is my current redacted attempt at making the X500 address: /O=SCXXX/OU=First Administrative Group/CN=Recipients/CN=myuser@mydomain.com Where am I going wrong? Exhcange 2010 SP1. Thank you. --Arnie Got it. I needed two X500 addresses. /O=SCXXX/OU=First Administrative Group/CN=Recipients/CN=myuser@mydomain.com and /O=SCXXX/OU=First Administrative Group/CN=Recipients/CN=myuser@mydomain That seems to do it. Thank you. --Arnie (the unable to format HTML guy)