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Cannot send emails

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After a recent thunderbird email automatic update not only did i lose all my old emails i also cannot send emails, can receive, i get error massage,

"An error occurred while sending mail: 

The mail server sent an incorrect greeting: avas03 Cloudmark Gateway ESMTP server not available." Thanks

After a recent thunderbird email automatic update not only did i lose all my old emails i also cannot send emails, can receive, i get error massage, "An error occurred while sending mail: The mail server sent an incorrect greeting: avas03 Cloudmark Gateway ESMTP server not available." Thanks

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Problem solved, had to re enter all details,shouldn't have to do this after update, anyway of stopping auto update?