On Fri, 26 Jun 2015, Ernie Dunbar wrote:
I've actually fixed this issue (at least I hope it's fixed the way I've set
it) by adding the load balancer's IP address to the file
/etc/exim4/local_host_whitelist. As far as I can tell, this hasn't turned our
server into an open relay, while by default allowing mail to come in from
this IP address.
It sounds like your load balancer isn't preserving the source IP of
incoming connections, and is instead behaving like a NAT when it connects
to exim; substituting the LB IP for the originating IP in the session.
At least, that's my take on it, given the amount of detail here, and
glancing over it for just a couple minutes.
--
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Dave Lugo [email protected] LC Unit #260 TINLC
Have you hugged your firewall today? No spam, thanks.
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Are you the police? . . . . No ma'am, we're sysadmins.
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