I trying to add custom x-headers to outgoing emails for specific users in exchange organisation. Kindly let me know the steps for each exchange version 2003/2007/2010. Thanks for your help!

No there is no utility or alternative method. If only for specific users you can use an outlook com add in. http://ivasoft.com/James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

I just want to confirm the transport rule setting of "set header with value" is same as adding custom x-headers to the emails?

We are sending the journal report to external domains and with the transport rule settings, custom x-headers are getting added to the P2 message rather than the P1 envelop message. I am trying to know whether by modifying the transport agent code as mention in the below link, do the headers will get added to p1 message? http://gsexdev.blogspot.com/2007/09/adding-x-header-in-exchange-routing.html#!/2007/09/adding-x-header-in-exchange-routing.html

I would think so since its using the standard mime class, but I would post in the dev forum for confirmation. qmQueuedMessage.MailItem.Message.MimeDocument; MimeNode lhLasterHeader = hlHeaderlist.LastChildJames Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

I really appreciate your help in resolving my issue. Have you got any confirmation yet, whether by modifying the transport agent code, headers will get add to P1 or P2 message?

Please post in the dev forum, or moderator please move\merge to dev forum. http://social.technet.microsoft.com/Forums/en-US/exchangesvrdevelopment/threadsJames Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com