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Re: EHLO command rejected / postfix IPv6



Le samedi 31 Juillet 2004 13:16, Claus Färber a écrit :
> Arnout Engelen <arnouten@bzzt.net> schrieb/wrote:
> >> This is evil. The HELO argument should be a domain name, not an IP
> >> address, even in brackets. Postfix is correct in refusing this,
> >> fix thunderbird.

It is NOT safe to assume that you have a DNS name when using IPv6, so, 
sending one's IPv6 address is very much the only sensible option to me.

> If Thunderbird is really sending "EHLO [IPv6:2001...]", then the
> error message is absolutly correct because a valid IPv6 address does
> not start with "IPv6:".

Yes it is correct. IP addresses have a different format for SMTP:
"[1.2.3.4]" for IPv4 and "[IPv6:1:2:3:4:5:6:7:8]" for IPv6.

-- 
Rémi Denis-Courmont

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