Running Exchange 2010 on public IPv4 and IPv6…

Yey! Today I have put a testing Exchange 2010 online to make my “exam” on Hurricane Electric IPv6 certification program… Well what I did is to put two extra DNS records to my DNS one with IPv4 “A” record pointing mail.ipv6.testingdomain.com to some IPv4 address and another “AAAA” record pointing mail.ipv6.testingdomain.com to an IPv6 address where my Exchange 2010 is listening…
Then I have added an MX record for domain ipv6.testingdomain.com to point on mail.ipv6.testingdomain.com.
Great! Everything works? NOT! 🙂

If you want your Exchange 2010 to receive mail from IPv6 mail servers you need to configure your receive (and send) connector to listen on IPv6 address of your server…

 Let’s configure Internet receive connector that is listening on fqdn in my example mail.ipv6.testingdomain.com First you need to add IPv6 address on which your server is listening on…

 

By default your server will accept only traffic from IPv4 world so we need to add IPv6 range…

 

 Let’s do it…

 

 Here goes the tricky part… If you think about an IPv6 address you always thing about 8×16 bit separated by colon… And logical solution would be to insert beging of range 0000:0000:0000:0000:0000:0000:0000:0000 and the same for FFFF:FFFF:FFFF… eight times… But no… You need to replace last two segments of 16 bits with 32-bit IPv4 represntation… So you need to insert:

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