Re: [Exim] double check DNS

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著者: Derek Broughton
日付:  
To: Exim Users Mailing List
題目: Re: [Exim] double check DNS
From: "Greg A. Woods" <woods@???>

> If you've got a _roaming_ private host, and if you cannot figure out

how
> to make this configuration learn its proper external hostname, then

it
> has absolutely zero business ever talking SMTP out through a NAT to

the
> real public Internet. Period. No if's and's, or but's.


I've got no problem with that...
>
> The SMTP client "MUST" send the canonical hostname for its source
> address, or a literal representation of that address.


So where exactly is the problem? If his free-roaming host uses its
own smtp server (he's obviously never been behind some of the
firewalls I use - you get out through _their_ smtp server or not at
all), he can always HELO with the IP.
--
derek