dravion.sm...@gmx.net: > Hi@ Developers > > I have a setup in my master.cf for multiple IPv6 Addresses with SSL and > TLS configured and on my IPv6 Layer everything works as expected. > The Problem: Some of the Mailhosters doenst accept IPv6 MTA's at this > time and so i need a fallback, but i have only 1 IPv4 Address in my Root > Server Webhosting Package. > > Can i run IPv4 Virtualhosts on one single IPv4 address at the same time > while IPv6 instances are running normally side by side?
One Postfix MTA can receive mail for a bazillion domains. In DNS this requires MX records that resolve to that Postfix MTA. On the Postfix side, list the domains and recipients as described in http://www.postfix.org/ADDRESS_CLASS_README.html > Right now i use a single IPv4 / virtual host smtp.mydomain.tld but > unfortently in the rceived by header of Thunderbrid and other Mail > clients there is > allways my IPv4 smtp forward mta embedded. Thadts not i what i want. I > want for each domain a single ipv4 mta, running side by side with my > working IPv6 Setup. If you must, that requires multiple IPv4 addresses (hint: an SMTP over TLS session starts in plaintext, and there is no plaintext SNI feature). Wietse
