Postfix Address Verification

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After creating the look up table I presume you ran postmap on it ?

On Thu, 28 Jun 2007 09:46:55 +0100 (BST), "Drew Marshall"
<drew at technologytiger.net> wrote:
> On Wed, June 27, 2007 23:46, Seamus Allan wrote:
>> It seems after implementing this that I am having a lot of spam stopped
>> at MTA level - this is very good.<br>
>> However, the next morning I came in to discover that some of the
>> domains we host were not getting any email.<br>
>> I used telnet to pretend to have a fake session with the smtp server,
>> and interestingly, when trying to do a rcpt <a
>> class="moz-txt-link-abbreviated"
>> href="mailto:to:user at brokendomain.com">to:user at brokendomain.com</a>, I
>> get the following error message.<br>
>> 450 <a class="moz-txt-link-rfc2396E"
>> href="mailto:user at brokendomain.com"><user at brokendomain.com></a>:
>> Recipient address rejected: Domain
>> not found<br>
>> Why is this happening? How come that Postfix is able to look into the
>> transport map and check the next server in line to see whether the user
>> is valid for most of the domains, but not for some. Is there a
>> misconfiguration somewhere? Is the verify map full or something?<br>
> 
> Firstly, please could you not use HTML mail. It does become something of
a
> mess (As you can see above) when working in plain text.
> 
> Anyway, check your maillog as I would expect the domain not found error
to
> come from a Postfix client access restriction (Reject unknown sender
> domain for example) and nothing to do with your recipient maps. The logs
> will tell you more.
> 
> Drew
> 
> 
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