We setup a mail account which a public email for accepting customer email in last year. We config that User name in AD as BBC user (info@bbc.com), login name as "info" and email address as info@bbc.com.In Yesterday, user try login info account and using Outlook 2007 to send a new email to extental users, it failure and no error message (check the TrendMicro event OK, Receiver report that no message get yet), In outside users, they can send the emails on this mailbox without error. User try reply the mail and found that it can sucessfully but the name of the sender only display info@bbc.com, NOT BBC user (info@bbc.com).For Internal user, the sender also display BBC user (info@bbc.com, and send/receive mails OK. We confirm that this mail account working well in this year and they receive mails about 50 in each day ONLY. and confirm MX record is correct and other office staff email account send and receive OK)PS. I try login WEB mail and found that we can send a new mail on this interface.

Hi Panzer, Message tracking log gives more idea about the failure of message when you send from info mailbox to external users. About the display name, just verify that Preserve senders display name in message in Advanced settings of Default Internet Message Formats is set. http://www.msexchange.org/tutorials/Explaining-Exchange-Message-formats.html

p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0cm;margin-bottom:.0001pt;font-size:12.0pt;font-family:'Times New Roman';} @page {;} @page Section1 {size:595.3pt 841.9pt;margin:72.0pt 90.0pt 72.0pt 90.0pt;layout-grid:18.0pt;} div.Section1 {page:Section1;} Hi Amit Tank,I try unselect "Preserve Sender's Display Name on messages" on exchange manager but error still occur. I captured the mail transaction log and found that EVENT ID seen OK. By user information, they said that they upgrade Office 2007 on last week, the Service Provider migration their user account and Outlook setting. Today I bootup the OLD PC (WIN XP w/Office XP) and found that Send/receive ok except the sender display name. Is there migration setup error, or user account error?ResultA. Login OLD PC as "info" account and open OfficeXP outlook -> send / receive ok. Sender show the display name as "info@.....com)B. Login OLD PC as user account and open OfficeXP outlook behalf of info account -> send / receive ok. Sender show the display name as "info@.....com)C. Login NEW PC as "info" account and open Office2007 outlook -> Failure (no error msg return to Sender/Recipient email account)D. Login NEW PC as user account and open Office2007 outlook behalf of info account -> send / receive ok. send display name as "info@.....com)E. Login WEB mail as "info" account, send / receive ok. Sender show the display name as "info@.....com)EVENT ID on A1027 -> 1019 -> 1025 -> 1024 ->1033 -> 1034 -> 1020 -> 1031EVENT ID on B1027 -> 1019 -> 1025 -> 1024 -> 1033 -> 1034 -> 1020 -> 1031EVENT ID on C1027 -> 1019 -> 1025 -> 1024 -> 1033 -> 1034 -> 1020 -> 1031EVENT ID on D1027 -> 1019 -> 1025 -> 1024 -> 1033 -> 1034 -> 1020 -> 1031 System: WIN2003 SBS Mail Gateway: Norton mail sec. 11.0 (SW)+ Trend micro Fire Wall (HW)

Hi Panzer From the event 1031, I think the message has been succesfully delivered by the Exchange Server. Therefore, I suggest you enable the SMTP Log on the SMTP Virtual Server to check which server the message is delivered to .Then, you need to look atthat server regarding the issue as from the message tracking log,The outgoing message was successfully transferred. Mike

I know that, but how to explain that using OLD PC with OfficeXP Outlook can send/receive mail OK? Our SMTP Virtual server will direct to Trend Micro Firewall and their IT support show me the message from NEW PC is successfully through the Trend Micro mail gateway into internet.panzerlui

HiPanzer,Based on the current information, it is hard to know why the message can be sent through old Outlook XP but fail through new Outlook 2007. From the inforamtion, we can basically exclude the Exchange related issue as the email sent through Outlook XP can be received by the external user. At this time, would you please let me know?If the user logon the info mailbox by using Outlook 2007 and send a email with serveral receipts. Whether all the recipients cannot receive the message? You can also include my email address v-mishen@microsoft.comas a recipient to test the issue.Mike

Yesterday, I do some testing on our exchange server and Outlook 2007: 1. Try using SMTP command on telnet by using "info" account to send a new message to my yahoo email account. We found that return code with no error and I received the mail on Yahoo account is ok. 2. Verify "Preserve senders display name in message" option on exchange server and restart the server. We login info as WEB mail and reply mail from Office 2007, found that Display name no now show the correct display name. 3. We create a new user and login as Office Outlook 2007; we found that the new user email also cannot send to the outside. 4. Modify Outlook 2007 user profile security setting; disable "Encrypt data between MS Outlook and Ex" and change the authentication to "Kerberos..." or "NTLM", restart Outlook 2007, but user "info" still cannot send a new email to outside.5. Uninstall Office 2007 and reinstall Office 2003, Login "into" and found that send & receive OK. In our office about 25 users but only this email account with eccentric event on sending new message. This user account is a public mail account which numerous users need to send/read the message on the server, we can't backup the mail and recreate this email account. Can you have any idea or experience about after upgrade Office 2007, user cannot send the email to outside. panzerlui

If I update KB926505 on our SBS server, can it fix the error on Outlook 2007?panzerlui