|If you need to change the IP that is used to send email out of your systme, you can do so by editing your /etc/exim.conf.|
You'll also need to update the SPF values in all TXT records in the dns zone for all domains that send from your server.
The SPF value must match the sending IP, which will be the new value you set.
Exim also has the ability to use string expansion to change the IP based on some criteria you'd like.
Discussion about this is on the forum. Note that we have not tested it:
|Show a different banner in the exim welcome headers depending on IP being connected to.|
|I need exim to send all outbound email through a remote mail server|
|My server is sending spam. What do I do?|
|E-Mail Rate Limiting with exim and the exim.pl|
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