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I have 3 accounts with one mail app which I access with Thunderbird. 2 of them send and receive OK. The third rejects the send attempt. The error message says this email cannot be sent through this server.

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  • Dernière réponse par DavidGG

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You can help me review my settings to resolve the error : "Sending of the message failed. An error occurred while sending mail. The mail server responded: sorry, you are not allowed to send through this server from the specified email address (#5.7.1). Please verify that your email address is correct in your account settings and try again." I have walked this through my ISP tech support and they say all the settings are correct and that I should contact Thunderbird.

You can help me review my settings to resolve the error : "Sending of the message failed. An error occurred while sending mail. The mail server responded: sorry, you are not allowed to send through this server from the specified email address (#5.7.1). Please verify that your email address is correct in your account settings and try again." I have walked this through my ISP tech support and they say all the settings are correct and that I should contact Thunderbird.

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This problem is caused by you inadvertently using the same outgoing server settings for several accounts that each requires its own settings. This is mostly Thunderbird's fault, not yours, in that when you setup a new account, Thunderbird reuses existing outgoing server settings that may already exist as a result of having previously created another account for the same server (but different username / email address), without telling you those settings are being shared across multiple accounts nor giving you the option to create new separate outgoing server settings specific for this account during the account setup process.

Thunderbird lets you create and manage multiple outgoing server settings for the same server, though, just not from within the main account settings. You have to do that from a separate Outgoing Server (SMTP) settings pane you may open by selecting the corresponding option at the bottom of the list of accounts in Account Settings. The following article has a screenshot that illustrates what I'm talking about:

https://support.mozilla.org/kb/cannot-send-messages

You can add there as many settings for the same outgoing server as you need, with each entry having its own username, and then assign the right outgoing server settings to each account in the main account settings.

This can be confusing and threads discussing this issue tend to be a bit messy. Let's see if we can make a shorter and clearer one this time… :)

Modifié le par DavidGG

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