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Sending of the message failed. An error occurred while sending mail. The mail server responded: [VO-101] Message blocked due to spam content in the message.. Please check the message and try again."

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I get the following message from Thunderbird and denying to send it: "Sending of the message failed. An error occurred while sending mail. The mail server responded: [VO-101] Message blocked due to spam content in the message.. Please check the message and try again." I spent quite a bit of time with my ISP and the tech did a number of tests and then determined that it is a Thunderbird problem. She then had me go into Thunderbird outbound settings and check "Normal Password" once or twice and the problem was solved for about 2-3 weeks...until today. The system is back at it's old tricks and now I can't even send out a message with a simple link to a story, article, etc. Not always, but if I try to send it to 10-20 friends, it kicks the message back with the above message. Needs a permanent solution. Thanks.

I get the following message from Thunderbird and denying to send it: "Sending of the message failed. An error occurred while sending mail. The mail server responded: [VO-101] Message blocked due to spam content in the message.. Please check the message and try again." I spent quite a bit of time with my ISP and the tech did a number of tests and then determined that it is a Thunderbird problem. She then had me go into Thunderbird outbound settings and check "Normal Password" once or twice and the problem was solved for about 2-3 weeks...until today. The system is back at it's old tricks and now I can't even send out a message with a simple link to a story, article, etc. Not always, but if I try to send it to 10-20 friends, it kicks the message back with the above message. Needs a permanent solution. Thanks.

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