Dear All, I tried to configure my Exchange Server 2007 to be able to receive over 10MB attachment Email from outside (For example, Gmail). I tested and successfully send/receive a E-Mail over 10MB internally, but getting the following error when sending via Gmail to my domain account. I already set the Maximum Message Size value to "15360" KB from the Receive Connectors and Send Connectors @ Edge Server. Could anyone help me? Thank you! Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 552 552 5.3.4 Message size exceeds fixed maximum message size (state 18). Thomas Lam

Hi, Please check the size of below configurations: 1.Organizaion Configuration Organization Configuration | Hub Transport | Global Settings tab | Transport Settings | 2.Server Configuration Server Configuration | Hub Transport | select a HT server | Receive Connectors -> select a connector | Properties | 3.Send Connector Configuration Organization Configuration | Hub Transport | Send Connectors -> select connector | Properties | 4.Recipients Configuration Recipients Configuration | Mailbox | select mailbox | properties | Mail Flow Settings | Message Size Restrictions| 5.Recipients Group Configuration Recipients Configuration |Distribution Group | select Group | properties | Mail Flow Settings | Message Size Restrictions 6.Global Setting Please use adsiedit to connect Configuration container : Configuration container | Services | Microsoft Exchange |YourOrgName| Global Settings | Message Delivery | Properties a. delivContentLength b. SubmissionContentLength c. msExchRecipLimit 7.Transport Rules Organization Configuration | Hub Transport | Transport Rules Mailbox Size Limits Are Not Enforced in a Reasonable Period of Time http://technet.microsoft.com/en-us/library/bb684892(EXCHG.80).aspx Thanks Richard Your expertise never fails to impress :)

Thanks Richard, I checked all the setting you mentioned above is 15360 KB, and <Not Set> for point 6. And I think the problem is on Edge Server as the email still not yet reach to Hub and already bounce back. Any idea? Thank you!

Please verify the size setting by powershell: http://www.ggkelley.com/Technotes/Exchange%202007%20Message%20Size.htm If you are using the Exchange Edge Transport Server (ETS), message size limits apply to the specific Exchange Edge Server.