Sabahattin Gucukoglu:
> One of my Postfix installs runs behind a NAT box. The host name
> for the local private IP is in the .local domain, not suitable for
> public use in SMTP sessions but suitable for trace fields. However,
> on IPv6, the host is a first-class citizen on the net and has its
> own host name.
>
> Can I arrange it so that the SMTP client uses different names in
> the EHLO/HELO command based on the protocol (IPv4 or IPv6) I am
> connecting with? I do not want IPv6 servers to know my server as
> "natbox.mydomain", but "Bloodstone.mydomain". (natbox is the NAT
> box, anything could run behind that.)
>
> more generally: can I arrange it so that I can select the EHLO/HELO
> name based on the destination host and protocol? Then intra-domain
> communication can use a local domain name.
I don't understand the question.
- Intra-domain communication. Is this IPV4 only? IPv6 only? Both?
- IPv4 communication. To the local domain? To the outside world? Both?
- IPv6 communication. To the local domain? To the outside world? Both?
There currently exists no support for making parameters IP protocol
dependent - with almost 900 configuration parameters, it is already
quite complicated.
Wietse
