Re: A few questions

[Brian Stafford <brian stafford uklinux net>]

| > OK. So it does both: I get message if mail is delivered, and a second one

If you want notification of delivery you want a DSN not an MDN.
Unfortunately Balsa cannot request DSNs (but libESMTP can :), Balsa has
no interface to that part of libESMTP's API :( ).

A DSN is generated by an MTA, therefore it is possible to notify
success or failure of delivery.  Furthermore if you ask for a DSN
you are guarenteed to get one.

An MDN is generated by an MUA.  SInce the MUA cannot process a message
until *after* it is delivered it is impossible to generate one on delivery
failure.  An MDN indicates whether the MUA was able to process or display
a message.  Unlike DSN, the user has the option to refuse to send an MDN.
So failure to receive an MDN may not mean that the message was not received
by the recipient.


Brian Stafford