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Testing SMTP over IPv6
- Subject: Testing SMTP over IPv6
- From: [email protected] (Matt Crawford)
- Date: Wed, 01 Dec 1999 09:21:49 -0600
- In-reply-to: Your message of Wed, 01 Dec 1999 19:55:49 +1100. <[email protected]>
> If you are mixing IPv4 & IPv6 servers in the MX list, it is important that
> the MX list be set in the following manner...
>
> IPv6 only servers MX a
> IPv6 + IPv4 servers MX b
> IPv4 only servers MX c
>
> Where a < b < c
No, this sort of ordering is only important if not all the servers
can do "final delivery" (i.e., take the message out of the SMTP
world).