Re: [Exim] sender_verify when DNS comes down....

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Autor: Matthew Byng-Maddick
Datum:  
To: exim-users
Betreff: Re: [Exim] sender_verify when DNS comes down....
On Wed, Nov 21, 2001 at 05:42:08PM +0100, Patrick von der Hagen wrote:
> If an address is invalid, an incoming SMTP call gets an error response to
> the RCPT command. If an address cannot immediately be verified, a temporary
> error code is given.


Are you sure your DNS server is not broken, and decided that in fact it was
going to return NXDOMAIN instead of any error.

Most mailer's I come across don't deal incorrectly with 4xx errors, but keep
trying after 5xx errors. They're spammers, of course, hence being told to go
away.

MBM

-- 
Matthew Byng-Maddick         <mbm@???>           http://colondot.net/