An external client keeps trying to email me some data through, he is sending it to the correct address, but its never coming through, on his side he gets a successful delviery report. Neither of us get any message the mail filter has caught it. What else can I check?

Hi, Message tracking on your Exchange server. SMTP log on your server. Leif

Hi, Message tracking on your Exchange server. SMTP log on your server. Leif Not being an exchange tech/admin myself, how to do the above, and what would it prove/disprove?

Hi, Message tracking on your Exchange server. SMTP log on your server. Leif How can I verify my actually SMTP address, to check they arent spelling it wrong or anything daft? And can SMTP address be case sensitive or anything weird like that?

Hi, What version of Exchange server are you using (when I know that I can give you links to articles that explains how to perform the steps). It would prove that messages actually got to your server and which e-mail address they were meant for. Leif

Hi, You shlould be able to check your e-mail address from the Outlook client - properties of your name. e-mail addresses are not case sensitive Leif

Hi, What version of Exchange server are you using (when I know that I can give you links to articles that explains how to perform the steps). It would prove that messages actually got to your server and which e-mail address they were meant for. Leif exch 2003

Message tracking: http://support.microsoft.com/kb/246856 SMTP logging: http://support.microsoft.com/kb/265139 Leif

Hi, Do you get e-mails from others delivered to your exchange server? Leif

I think it due to the filter, such as attachment filter. So could you please ask the user to send a plain text email to you. If you can receive the plain text email, the issue should be the filter. Related information: Configure Attachment Filtering Understanding Attachment Filtering Enable message tracking will help to found the issue. Configure Message Tracking Please make sure the send not in your blocked sender, and there is not any rule to forbid from receiving email from the sender. 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.