[Exim] Adding callback timeout info in messages

I use defer_ok in sender verify callouts, and a mail is accepted even though
its sender could not be verified using callout. Is it possible to add a
header to the mail in this case saying that this sender could not be
verified using callout even though his domain verified ok.

- Sandip

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Sandip Bhattacharya
sandip (at) puroga.com
Puroga Technologies Pvt. Ltd.
Work: http://www.puroga.com        Home: http://www.sandipb.net

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