Hi Mihamina,
> [mihamina@recette53 ~]$ rpm -aq | grep exim
> exim-4.72-4.el6.x86_64
>
> [mihamina@recette53 ~]$ telnet localhost 25
> Trying ::1...
> Connected to localhost.
> Escape character is '^]'.
> 220 recette53.ideoneov.com ESMTP Exim 4.72 Mon, 11 Mar 2013 10:09:27 +0100
> HELO mihamina
> 250 recette53.ideoneov.com Hello localhost [::1]
> MAIL from: <mrakotom@xxxxxxx>
> 250 OK
> RCPT to: <mihamina@xxxxxxxxx>
> 550 relay not permitted
>
>
> mihamina@recette53 ~]$ telnet 127.0.0.1 25
> Trying 127.0.0.1...
> Connected to 127.0.0.1.
> Escape character is '^]'.
> 220 recette53.ideoneov.com ESMTP Exim 4.72 Mon, 11 Mar 2013 10:10:26 +0100
> HELO mihamina
> 250 recette53.ideoneov.com Hello localhost [127.0.0.1]
> MAIL from: <mrakotom@xxxxxxx>
> 250 OK
> RCPT to: <mihamina@xxxxxxxxx>
> 250 Accepted
> DATA
> 354 Enter message, ending with "." on a line by itself
> From: <mrakotom@xxxxxxx>
> To: <mihamina@xxxxxxxxx>
> Subject: Haftra Andrana
I'm not a specialist on EXIM, but obviously your system resolves 'localhost' to the IPv6 address ::1.
Probably you have allowed EXIM to relay for 127.0.0.1/8, but not for ::1, so it will allow relay access on IPv4 localhost, but not on IPv6 localhost.
Cheers,
Peter.
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