From: Harry Hoffman (hhoffmanip-solutions.net)
Date: Wed Feb 06 2008 - 11:25:19 CST

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You just need to take it a step further :-)

...
rcpt to: <nosuchuser12323123123123132124432342yahoo.com>
250 recipient <nosuchuser12323123123123132124432342yahoo.com> ok
data
354 go ahead
Testing
.

554 delivery error: dd This user doesn't have a yahoo.com account
(nosuchuser12323123123123132124432342yahoo.com) [0] -
mta367.mail.mud.yahoo.com
421 Service not available, closing transmission channel.
Connection closed by foreign host.

Valdis.Kletnieksvt.edu wrote:
> On Wed, 06 Feb 2008 10:44:10 CST, Paul Schmehl said:
>
>> RCPT TO: <abuseyahoo.com>
>> 250 recipient <abuseyahoo.com> ok
>
> % telnet f.mx.mail.yahoo.com 25
> ...
> rcpt to: <ctl-alt-cokebottleyahoo.com>
> 250 recipient <ctl-alt-cokebottleyahoo.com> ok
>
> Yee. Hah. They 250 for a probably-nonexistent account (unless that
> one actually *does* exist? :)
>
>
>
>
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