[exim] exim outgoing interface by Received IP

Hello,

i got a mailserver with 2 IP address : *x* and *y* with different
certifikate, and different rDNS. Standart system, if mail is received to
ip *x* or *y* it goes out by ip *x*. But somme providers have some
problems with it, because :

Your reverse DNS does not match with your sending domain.
Reverse DNS lookup or reverse DNS resolution (rDNS) is the determination
of a domain name that is associated with a given IP address.
Some companies such as AOL will reject any message sent from a server
without rDNS, so you must ensure that you have one.You cannot associate
more than one domain name with a single IP address.
Your IP address Y** is associated with the domain yyy.domain
Nevertheless your message appears to be sent from xxx.domain


and my question is, if its posible to use *y *for outgoing, if custommer
uses *y* for sending mail, and use for outgoing IP *x* if he uses this one.

I know that I can use list of domains.. but that's not my solution.


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S pozdravom

Mgr. Robert Popelka
Webhostingovy a Serverovy specialista
tel : +421 915 770987