underline in mailheader

Julian Field MailScanner at ecs.soton.ac.uk
Thu May 19 09:49:05 IST 2005


I have added a note about this to the MailScanner.conf file. It now
warns against both "." and "_" characters appearing in %org-name%.

On 19 May 2005, at 01:19, James Gray wrote:

> On Wed, 18 May 2005 10:52 pm, Martin Hepworth wrote:
>
>> yes, not a valid character for mail headers
>>
>> most MTA's don't mind but Novell's (I think) does.
>>
>
> I believe you're right.  We had a user add a "custom" header to all
> his
> outgoing mail so that recipients would know for sure if it came
> from him
> (brain dead, but gotta admire the effort).  Sure enough, all our
> internal
> sendmail and exchange servers routed his mail correctly - as soon
> as it hit
> a Groupwise machine, it would bounce.
>
> Took me a while to track it down, but the header was something like
> (he even
> managed to get the "X" for eXperimental right!):
>
> X_ID_Verify:This_message_came_from_<NAME>
>
> I've since introduced our intrepid hero to PGP :P
>
> James
>
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--
Julian Field
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PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654

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