IP used when sending emails?

xcensus

Verified User
Joined
Sep 4, 2003
Messages
52
Hi,

If my server is on say IP 190.196.0.100 and I have resellers on .101-.110 for example, and their clients or them send emails, what is reported as the sending IP ? So I can setup RDNS on each of my clients to make tracking easier, but pointless if all emails seem to come from main server IP

Thanx
 
xcensus said:
If my server is on say IP 190.196.0.100 and I have resellers on .101-.110 for example, and their clients or them send emails, what is reported as the sending IP ?
By default, exim reports the server IP# and server hostname.
So I can setup RDNS on each of my clients to make tracking easier, but pointless if all emails seem to come from main server IP
It's configurable in exim.conf, you can force exim to use another IP# or hostname if you wish.

But no mailer is designed to change it's identities in realtime based on who's sending the email.

Here's why:

How would exim know which domain name or IP# to use? If you can show me the scenario whereunder exim could/would figure it out, you might convince me to investigate this further.

(Don't forget that a user can use any domain name s/he wants in his/her From address.)

Jeff
 
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