I have an Exchange 2007 with an Edge server roll on one box and all other server rolls on another box. I was just recently noticed that any new created mailbox cannot received any external emails for a certain period of time ( I don't know exactly how long), but only internal emails can deliver into the new mailbox. Is it supposed to be like that until the next edge synchronization take place? Is there anything I should do on the Edge server roll once new mailbox is created? I tried to do a start-edgesynchronization, and even import a new edgesubcription. I have forefront and puremessages installed on the Edge. Any help would be appreciated. Thanks all.

Hi, Did you tested it by disabling chunking on recieve connector by the following cmdlet: Set-ReceiveConnector -identity "connector name" -BinaryMimeEnabled $false -ChunkingEnabled $falseRegards from www.windowsadmin.info

Hi, Did you enable the Recipient Filter "Block messages sent to recipients not listed in the Global Address List" on the Edge server? Please understand that the recipients is synchronized very 4 hours. Could you send the email after starting-EdgeSynchronization? If not, that should be the cache issue on the Edge server. The Transport service has its own cache to store Recipient information, Edge server doesn’t have to query ADAM for every transaction. The Transport cache on the Transport Service on the Edge Transport server, doing spam filtering, wouldn’t refresh, rejecting messages for new users. You can disable Transport caching on The Edge Transport Server by running the following command at the Exchange Shell. Set-TransportServer SERVERNAME -RecipientValidationCacheEnabled $false Thanks AllenAllen Song

Bingo!!! Thanks so much ManU PhiliP & Allen Song for your helps. The Recipient Filter "Block message sent to recipients not listed in the Global Address List" was enable by default. It works after I disabled it. Should I still need to do this Set-TransportServer SERVERNAME -RecipientValidationCacheEnabled $false. Thanks guys for your help.

Gr8 ! you fix it. Now cache disable is not required in the EDGE Server.Anil

You guys are really helpful. Is it better to do a cache disable or to enable "Block message sent to recipients not listed in the Global Address List"? Thanks so much all of you.

Yes, You need to Enable "Block message sent to recipients not listed in the Global Address List" as it is a required Security. As the new mailbox was not updated on your Edge server and with the above setting it rejected the external mail. If this setting is Disabled any messages coming addresesd to your domain ( w/o valid e-mail addressor mailbox )will be accepted and processed ( not delivered as the mailbox is not present) increasing chances of Spam and load on edge.

Khoj Sahiwala, after enble "Block message sent to recipients not listed in the Global Address List" on the Edge, new created mailbox cannot received external emails. I even ran "Set-TransportServer SERVERNAME -RecipientValidationCacheEnabled $false" and manually did a Start-Edgesynchronization. Any help are appreciated.

Hi, After configured the RecipientValidationCacheEnabled, did you restart the Transport Service on the Edge server? Was the new created mailbox indeed synchronized to ADAM of the Edge server successfully? You can use ADAM ADSI Edit tool to find the user. Please run test-Edgesynchronization command in EMS, then post the results. Thanks AllenAllen Song

Allen, I forgot to restart the Transport Service. After restarting it, it works!!! Thanks so much for all the help guys. Cheers.

Hi, Glad to hear that is resolved. I mark this case. AllenAllen Song