Re: [Exim] Hmm. I haven't seen this one before.

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Author: Philip Blundell
Date:  
To: Oliver Cook
CC: Derrick MacPherson, exim-users
Subject: Re: [Exim] Hmm. I haven't seen this one before.
>> 2001-03-29 10:42:38 rejected EHLO from [209.88.236.42]:
>> syntactically invalid argument(s): ::ffff:209.88.236.42
>>
>> What is with the ::ffff: before the address?
>
>IPv6 notation?


Yes: that's how IPv4-mapped addresses are represented in IPv6 form. It's
pretty broken for another MTA to be giving its address that way in an EHLO
command.

p.