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Click on “More Settings…” and select the “Outgoing Server” tab on the new window that opens. At the top of the Outgoing Server tab, check the box labelled “My outgoing server (SMTP) requires authentication” and make sure “Use same settings as my incoming mail server” is selected. How to correct 554 5.7.1 - Server Sitters The recipients server has determined the senders server to be a source of spam, or that it had failed security checks; What exactly is a relay access denied error? When you send an email, your email client sends the email to your own mail server. Your mail server then sends it on (Relays) to the recipients email server. SOLVED - Thunderbird not sending email from one account I found the answer indirectly using Mozilla support. In the Outgoing Server settings, Username was set to ***** instead of ***** Simply put, I added to the Username and it worked. I was asked to confirm Password on sending my first email, but I checked the box to Save the password using Password Manager.

SMTP error reference - G Suite Admin Help

Solved: Exchange SMTP Error 550 5.7.1 Unable To Relay Jul 01, 2020 FIX: Relay Access Denied 554 5.7.1 Error in Outlook Jun 27, 2018

550 5.7.1 Message rejected due to content restrictions in

Feb 07, 2014 Mail Server Responded: 5.7.1 Relaying not allowed Mail Server Responded: 5.7.1 Relaying not allowed. DeKnCz - July 7th, 2017. RECOMMENDED:If you have Windows errors then it's highly recommended that you download and install this Windows Repair Tool. get the message, noted in the Subject window, when I try to send e-mail. Using the same account settings in in each of the accounts and get the Thunderbird: Why would Outgoing Mail suddenly Stop Working