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Cannot send or receive email using Thunderbird, but can get it just fine on Verizon server.

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Every time Mozilla/Thunderbird does a major upgrade I have a problem with sending and receiving my email. When trying to send an email, I get the message:

"An error occurred while sending mail. The mail server responded: 5.7.1 Missing or literal domains not allowed. Please verify that your email address is correct in your Mail preferences and try again."

Using my regular email password, I am able to get my email from the Verizon server just fine. It simply will not work with Thunderbird. Every time there is a major upgrade I spend hours and hours with Verizon techs with them trying to figure out what is wrong. Yesterday was one such day and we looked at EVERYTHING and no reason could be found for the problem. The tech concluded that the problem had to be with Thunderbird and that I should re-enstall it!!!! I don't have time to reinstall it! Somehow it has been fixed before but we don't even know how.

Please HELP!!

Every time Mozilla/Thunderbird does a major upgrade I have a problem with sending and receiving my email. When trying to send an email, I get the message: "An error occurred while sending mail. The mail server responded: 5.7.1 Missing or literal domains not allowed. Please verify that your email address is correct in your Mail preferences and try again." Using my regular email password, I am able to get my email from the Verizon server just fine. It simply will not work with Thunderbird. Every time there is a major upgrade I spend hours and hours with Verizon techs with them trying to figure out what is wrong. Yesterday was one such day and we looked at EVERYTHING and no reason could be found for the problem. The tech concluded that the problem had to be with Thunderbird and that I should re-enstall it!!!! I don't have time to reinstall it! Somehow it has been fixed before but we don't even know how. Please HELP!!

All Replies (2)

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Well, it has been a few hopeful days since I have last written about my problem of being unable to send any emails in Thunderbird. After the last emails focusing on the modem, I called Verizon and after a long talk to go through everything I had already done, the rep took a look at my modem. He said that, indeed, it was a very old one so he sent out to me a new one which I received today. It is one of their current good ones. I was so excited because I really thought the new router was going to solve the problem BUT it didn't! Here is my continuing message "An error occurred while sending mail. The mail server responded: 5.7.1 Missing or literal domains not allowed. Please verify that your email address is correct in your Mail preferences and try again." I don't have the strength to call Verizon back tonight but will need to, I guess, call them tomorrow. Was I expecting too much? Did something need to happen with the new modem and my system to make things right? Thanks you all!

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In your setup for outgoing mail did you enter your full email-address as username? And it has no extra points, blanks etc?

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