Re: [Exim] yahoo.com makes callout senderverify unusable!?

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Author: Tim Jackson
Date:  
To: exim-users
Subject: Re: [Exim] yahoo.com makes callout senderverify unusable!?
Hi Matthias, on Thu, 4 Dec 2003 11:29:03 +0100 you wrote:

[yahoo bounces]
>   123noop444@???
>     SMTP error from remote mailer after end of data:

                                                 ^^^^
                                                 Note


> So what are the yahoo-MTAs doing?

Nothing new, really. They do some rejections at RCPT time, but for
whatever reason (anti-dictionary-attacks?) do a lot at DATA time in which
case you're right, callouts won't help you. They have been doing this for
a while, though.


Tim


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