Edmundo Carmona wrote:
I don't know about the mail server, but apache supports virtual
domains, and so the requests will be served differently depending on
the request's domain, and not the IP of the host. A single IP should
do the trick.
Yes, that's the case when the hostnames have the same IP. But when they
have different ones and apache tries to answer their request, the
clients will denied it, as it comes from a different IP.
Some ascii 'art' might help:
192.168.0.10 has external IP a.b.c.d (iptables SNAT)
a.b.c.d:80 DNAT \
---> 192.168.0.10:80
a.b.c.f:80 DNAT /
The request from the client arrives at apache and apache answers, no
matter via which external IP it comes. But when the request comes via
a.b.c.f, then the client will be expecting the answer form a.b.c.f, not
a.b.c.d, where it will come from. Apache is assigned a.b.c.d and has no
way of changing that, actually apache thinks it sending from
192.168.0.10 anyway.
The only solution I see is having a (virtual) interface for each
external IP. That so?
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