From: Udo Rader (listudobestsolution.at)
Date: Mon Nov 30 2009 - 16:35:39 CST

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Eero Volotinen wrote:
> Udo Rader wrote:
>> Hi,
>>
>> I know, this issue has been discussed quite often, but nevertheless I
>> am just wondering if something was possible to circumvent the missing
>> list of recipients.
>>
>> Imagine a situation where there is a main postfix gateway used for
>> spam defence, transporting successfully passed emails to their end
>> points defined in transport_maps.
>>
>> Without knowledge about the valid email addresses that each transport
>> endpoint supports, the main gateway will just have to accept any email
>> address for any defined transport endpoint domain.
>>
>> Now what I am wondering if it was possible that the main gateway used
>> the SMTP "VRFY" command with the transport endpoints before actually
>> sending a email to them.
>
> I am using address verification callout on our mailproxy with cache. It
> works fine. See documentation at:
>
> http://www.postfix.org/ADDRESS_VERIFICATION_README.html

That was extremely easy, thank you :-)

--
Udo Rader, CTO
http://www.bestsolution.at
http://riaschissl.blogspot.com

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