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I'm just trying to work out why there has been a delay on an incoming email and I have been checking the headers, and was puzzled by this line:

X-SEF-Processed: 6_1_0_100__2009_08_25_21_23_08

Am I right to assume that the 21_23_08 part is actually the time, and that this is the time it left the senders system?

Any help appreciated, thanks.

/Karmik

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I have to admit I am curious myself. I can't find a reference to it in any of the RFC documents. –  Diago Aug 26 '09 at 11:08
    
X- headers are for user defined extensions (see RFC822) so that there isn't a namespace collision with defined headers. –  mwalling Aug 26 '09 at 12:17
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up vote 0 down vote accepted

This actually relates to the Surfcontrol email software that scanned the email in question.

Format is :-

X-SEF-Processed: Surfcontrol / Websense version, Date and Time.

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Hey guys. Since I got no other answers I assumed this to be the case. It tied in with the info I already new from our MessageLabs interface (i.e. time it hit our mail server).

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