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Otherkot

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Hello,four messages dont send,status : please try another server code :451.Somebody may help?
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ksnyder

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It seems as though the receiving server is rejecting for some reason. Are the four messages all destined to the same domain? If so, did any other mail to that domain get delivered? Is your mail server's IP address on any blacklists? DKIM configured?

Check this out: http://vimeo.com/103685009 It's great advice for assuring reliable email delivery and given that the new year is approaching, possibly good timing as part of an annual email health-check.

Ken Snyder
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Otherkot

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Thanks for the reply.Problem resolved,but i'm did not do anything.
I have black list with external ip,(about five ip)becouse through this IP
is an attack [dha].And yes,this four message have one domain.
Other messages send without problem .
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