>
> The application is designed to send out e-mails (using CF-MAIL) to one
> group (say the mentor) so that they can hit reply to send a response
> back to the other group (mentees). However, the mail server is set up
> to prevent relaying, so the messages need to have our system in the
> from address (so, the from would be something like: "John Smith
> <[EMAIL PROTECTED]>", where John Smith is the mentee).
That is no protection against relaying, there is a reason why all
the standard relay tests use addresses from a local domain.
Everybody can fake an email address (isn't that what you are
doing yourself?).
> Because we want tthe mentor to be able to just hit "Reply" to send a
> response back to the mentee, we're including the standard reply-to
> header with the mentee's actual e-mail address.
>
> We're running into some instances where the response is being sent
> back the "[EMAIL PROTECTED]" address instead of the reply-to
> address. We're not able to reproduce this, and we're not really able
> to contact the individual users to investigate it with them.
>
> So, my questions are basically this:
> 1) Are there any common e-mail clients which don't honor the reply-to header?
Many malconfigured spamfilters, virusfilters, autorepliers and
the like, with Microsoft Exchange probably the worst one.
> 3) Are there different forms of the reply-to header that we can also try?
No.
Fix your mailserver, it is easier.
Jochem
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