George A. Theall on 11 Dec 2007 12:07:23 -0000


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Re: [PLUG] How To Verify E-Mail


On Mon, Dec 10, 2007 at 11:00:46PM -0500, Brian Vagnoni wrote:

>    There are many ways; but from the console. I'm sure there are others that
>    will demo other methods.
> 
>    dig any domainname.com
> 
>    Look for the mx record
> 
>    telnet mail.domainname.com 25

Beyond what Toby mentioned, graylisting, blacklisting, and outbound port
25 blocking by one's own ISP / organization make this problemmatic. 

What's wrong with sending a message and asking for a response, like
mailing list management software typically do?


George
-- 
theall@tifaware.com
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