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The server responded: error message Contact your mail administrator for assistance.
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The server you specified exists, but it is not an SMTP server. Please verify that your SMTP server setting is correct and try again, or else contact your network administrator.Īn error occurred sending mail: The mail server sent an incorrect greeting: message The server may be unavailable or is refusing SMTP connections. The message could not be sent because connecting to SMTP server server name failed. The status message at this stage is "Connecting." Thunderbird connects to the SMTP server, and the SMTP server responds. In this case the error might be coming from that program, not from the SMTP server. Note: If an error message shows the server name as "localhost", it usually means that you are using a webmail extension or an anti-virus program. Thunderbird includes this in its error message.
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Some of these error messages are misleading. For troubleshooting techniques, see: Cannot send mail For each error message it identifies possible causes. This article lists the error messages that you might see when you try to connect to an SMTP server to send mail. This article was written for Thunderbird but also applies to Mozilla Suite / SeaMonkey (though some menu sequences may differ).