It's weird, if I mail to karlnet@dayton.akorn.net I can post. If I
mail to karlnet@wispnotes.com I get this .....
The paris.akorn.net mail server is using 'gray-listing' method to
stop spammers (spamer usually doesn't try to deliver message again
after temporary problem is reported by mail server. Regular mail
servers do (or better - should do)).
I don;t think that greylisting on primary mail server is a good idea
(paris.akorn.net is a primary mail server) - it should be used (if
there is no better way) on backup MXes instead...
If you want you should find some related info about gray listing using
google...
Regards
Dalibor Toman
Fortech Ltd
----- Transcript of session follows -----
... while talking to paris.akorn.net.:
DATA
<<< 450 <karlnet@wispnotes.com>: Recipient address rejected:
Greylisted for 5 minutes
<karlnet@wispnotes.com>... Deferred: 450 <karlnet@wispnotes.com>:
Recipient address rejected: Greylisted for 5 minutes
<<< 554 Error: no valid recipients
... while talking to dayton.akorn.net.:
DATA
<<< 554 <karlnet@wispnotes.com>: Relay access denied
554 5.0.0 Service unavailable
<<< 554 Error: no valid recipients
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