[exim] interface smtp transport option

Hi,

I have smtp transport with few interface options and sometimes I change IP
there. Unfortunately exim always sends HELO/EHLO with primary hostname.

How can I tell exim to use hostname from revdns for IP specified in interface
option for HELO/EHLO instead?

-- 
Arkadiusz Miśkiewicz        PLD/Linux Team
arekm / maven.pl            http://ftp.pld-linux.org/