Bouncing messages with missing From: info

[Raymond Norton]

I have the following in main.cf:

smtpd_restriction_classes = spf_policy, grey_policy, whitelist_policy 
verify_recipient, look_ahead

Yet, the relay domain on my end is getting hammered with undeliverables  
to non-existant users. They are using Exchange 2010 and I have verified 
their server sends out a 550 message, but would like them not to have to 
deal with the messages in the first place.



On 04/15/2013 10:17 AM, Jerry Benton wrote:
> NDRs are not supposed to have info in the From field according to RFC. 
> That prevents emails bouncing around until the end of time.
>
> So, are these NDRs to real users? If not, you can use recipient 
> verification.
>
> References:
>
> tools.ietf.org/html/rfc3834 <http://tools.ietf.org/html/rfc3834>
>
> tools.ietf.org/html/rfc2822 <http://tools.ietf.org/html/rfc2822>
>
> tools.ietf.org/html/rfc5321 <http://tools.ietf.org/html/rfc5321>
>
> tools.ietf.org/html/rfc6522 <http://tools.ietf.org/html/rfc6522>
>
>
> On Mon, Apr 15, 2013 at 3:43 PM, Raymond Norton <admin at lctn.org 
> <mailto:admin at lctn.org>> wrote:
>
>     I am using MailScanner 4.84.5 with postfix. I have one relay domain
>     getting hit hard by  non delivery notices which are missing any
>     info in
>     the "From" field.
>
>     Is there a rule I can add to postfix that will bounce messages
>     like this?
>
>
>     Raymond
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>
> -- 
>
> --
> Jerry Benton
> Mailborder Systems
> www.mailborder.com <http://www.mailborder.com>
>
> -- 
> This message has been scanned for viruses and
> dangerous content by *MailScanner* <http://www.mailscanner.info/>, and is
> believed to be clean.
>
>

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