Same Problem
Feb 13, 2009
-   Error desconocido. Cuenta: 'mail.coinpemer.es', Servidor: 'mail.coinpemer.es', Protocolo: SMTP, Respuesta del servidor: '451 Please try again later.', Puerto: 25, Seguridad (SSL): No, Error de servidor: 451, Número de error: 0x800CCC6A-   Guest Feb 05, 2009
-   I can not send emails with attachemtns out on my server- they sit in the outbox with the folwoing message, Other emails arer sent out 3 times
An unknown error has occurred. Subject 'Fw: Program Question Girl Protection Procedure-module004.pdf [2/4]', Account: 'shawmail.no.shawcable.net', Server: 'shawmail.no.shawcable.net', Protocol: SMTP, Server Response: '451 The server connection is terminated', Port: 25, Secure(SSL): No, Server Error: 451, Error Number: 0x800CCC6A-   Guest Dec 01, 2008
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An unknown error has occurred. Account: , Serve', Protocol: SMTP, Server Response: '451 Please try again later.', Port: 25, Secure(SSL): No, Server Error: 451, Error Number: 0x800CCC6A
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ashishbhatna Nov 21, 2008
-   An unknown error has occurred. Account: '72.167.140.209', Server: '72.167.140.209', Protocol: SMTP, Server Response: '451 Please try again later.', Port: 25, Secure(SSL): No, Server Error: 451, Error Number: 0x800CCC6A -   Guest Aug 06, 2008
-   An unknown error has occurred. Account: 'www.hotelkanhashyam.com', Server: 'www.hotelkanhashyam.com', Protocol: SMTP, Server Response: '451 Please try again later.', Port: 25, Secure(SSL): No, Server Error: 451, Error Number: 0x800CCC6A-   Guest