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email bounce back


When sending an email to the extenal company with excel attachment file, it bounces back with the below message :
554-5.7.0 Reject, id=06529-01 - BANNED:554-5.7.0 P=p006,L=1,M=multipart/mixed |554 5.7.0 P=p005,L=1/2,M=application/octet-stream

But in inside the company, we can receive this email. And also when i send the mail with excel attachement to me external mail ( gmail, hotmail ) it works.

If i send an test email without any attachement to this external company; it works.

This means that the external companies is refusing the attachment ? or this issue is in our side.

Is there any way to check in our domino server / spam server, whether the mail is blocked ?
Any ideas how to fix this issue ?

2 Solutions
This SMTP code means that delivery failed due to a policy on the receiving mail server. It is not uncommon for mail servers to reject office files from external sources. Try to send the file as a ZIP or RAR attachment.
If your getting that message then it is the recieving server that is actively blocking the attachment for some reason.
Either they have a policy of no application type attachments or their system detected a macro or something in the attachment that has caused it to be banned.

Sjef BosmanGroupware ConsultantCommented:
Better rename it as a .txt file, even zips sometimes are refused. Or rename it to yourfile.xls.txt, so the receiver can see that the file is to be renamed back.
kriiisAuthor Commented:
thanks a lot.

The emails are refused at other end.

As we are sending our emails from lotus notes, the receiver receives the attachment in format .wmf  so they rejects our emails.

I tried even by sending as a zip file it doesnt worked. when i send the file in format xls ( 97 ) , they received the email without problem.

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