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Alexey View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Alexey Quote  Post ReplyReply Direct Link To This Post Topic: Bug?
    Posted: 14 January 2005 at 12:58am

Hi, All!

I am using attachments black list. Why don't send NDR if mail rejected?

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Desperado View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Desperado Quote  Post ReplyReply Direct Link To This Post Posted: 16 January 2005 at 6:43pm

Alexey,

If I am not mistaken, banned attachments *do* send NDRs by design.  However, presumably, you add a banned attachment because you feel it is a virus and since most viruses forge the from header, sending a return would only go to the wrong recipient anyway.
 
EXAMPLES:
 
*.ade    Will block and send NDR
*.ade:nondr   Will block and NOT send NDR
*.ade:null    Will block and NOT send NDR and NOT send to quarantine
 
Anyone feel free to correct me.
 
Regards,
 
Dan S.
 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Alexey Quote  Post ReplyReply Direct Link To This Post Posted: 17 January 2005 at 3:23am
If I am not mistaken, banned attachments *do* send NDRs by design.  However, presumably, you add a banned attachment because you feel it is a virus and since most viruses forge the from header, sending a return would only go to the wrong recipient anyway.
Indeed! But sometimes useful attachment comes with "wrong" extension and sender not receive NDR.
EXAMPLES:
 
*.ade    Will block and send NDR
*.ade:nondr   Will block and NOT send NDR
*.ade:null    Will block and NOT send NDR and NOT send to quarantine
I'm using only first variant, but NDR not sending. Maybe some settings have an influence on it?
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Desperado View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Desperado Quote  Post ReplyReply Direct Link To This Post Posted: 18 January 2005 at 7:27pm

Alexey,

Hmmm ... I just tested again by sending a banned attachment from my hotmail account and received the following in my hotmail box:

Reporting-MTA: dns;hotmail.com
Received-From-MTA: dns;mail.hotmail.com
Arrival-Date: Tue, 18 Jan 2005 16:23:01 -0800

Final-Recipient: rfc822;XXX@XXXs.net
Action: failed
Status: 5.5.0
Diagnostic-Code: smtp;557 This email is rejected. It contains keywords OR a message format rejected by our antispam content filter.

So I am not sure what is happening on your end.

Dan S.

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