Thunderbird has blocked sending of email

 barbarawidener@gmail.com
   host eig-east.smtp.a.cloudfilter.net [18.215.58.191]
   SMTP error from remote mail server after end of data:
   550 Connection Rejected - see http://www.spamhaus.org/query/ip/162.241.225.213 AUP#BL

BlueHost has confirmed that our email (joe@wrigleyranch.com) and/or IP have not been blocked or blacklisted. We tested this together using the BlueHost WebMail app directly and can send and receive emails without an issue. We then tried again to send through Thunderbird. This is the exact and complete error message we received as we attempted to send a test message: This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: barbarawidener@gmail.com host eig-east.smtp.a.cloudfilter.net [18.215.58.191] SMTP error from remote mail server after end of data: 550 Connection Rejected - see http://www.spamhaus.org/query/ip/162.241.225.213 AUP#BL Reporting-MTA: dns; box5293.bluehost.com Action: failed Final-Recipient: rfc822;barbarawidener@gmail.com Status: 5.0.0 Remote-MTA: dns; eig-east.smtp.a.cloudfilter.net Diagnostic-Code: smtp; 550 Connection Rejected - see http://www.spamhaus.org/query/ip/162.241.225.213 AUP#BL This did not occur until the latest update by Thunderbird/Mozilla on Jan 14, 2026 at 7:35pm, MST. It is ONLY Thunderbird that is refusing to send messages, returning this SMTP error message. BlueHost contends that since we are not blacklisted anywhere that this must be an error generated somehow by Thunderbird as we can send email through BlueHost web mail without an issue or rejection. Spamhaus.org also confirms that we are not blacklisted nor restricted. We are only affected when trying to use Thunderbird that we have been using for well over 5 years without any type of problem whatsoever... ever. We are, however, getting a very odd message from you as we reset our password when we had trouble using our stored password: We received a request for a password change on your Mozilla account from: Chrome on Mac OS X 10.15.7 Phoenix, AZ, United States (estimated) Sunday, Jan 18, 2026 3:04:13 PM (MST) WE ARE ON MAC OS X VENTURA 13.7.8. AND THE BROWSER WE ARE USING IS "BRAVE," NOT CHROME. Does this indicate or imply anything that may be wrong??? We are North of Phoenix in Flagstaff, AZ. So, this seems correct as an estimated location (150 miles North). We need your help!! Joe Amadeo 928 635 1108 landline, no texts joe@wrigleyranch.com