Email that I am sending from Thunderbird is being rejected for no apparent reason by the recipient server. This is not due to an ISP or sending server security issue sinc… (read more)
Email that I am sending from Thunderbird is being rejected for no apparent reason by the recipient server. This is not due to an ISP or sending server security issue since, when I send exactly the same email from my ISP email web page (not Thunderbird) the email is received properly and accepted without error. So, the problem is most definitely with Thunderbird. The following is the header text from one of the rejection replies.
- These recipients of your message have been processed by the mail server:
firstname.lastname@example.org; Failed; 5.3.0 (other or undefined mail system status)
Remote MTA aspmx.l.google.com: network error
- SMTP protocol diagnostic: 550-5.7.1 The user or domain that you are sending to (or from) has a policy that\r\n550-5.7.1 prohibited the mail that you sent. Please contact your domain\r\n550-5.7.1 administrator for further details. For more information, please visit\r\n550 5.7.1 https://support.google.com/a/answer/172179 i11-20020a05620a404b00b00775902632ffsi1357055qko.279 - gsmtp
Reporting-MTA: dns; altprdrgo06.altice.prod.msg.synchronoss.net
Received-from-MTA: dns; [192.168.1.4] (126.96.36.199)
Arrival-Date: Thu, 30 Nov 2023 11:42:56 -0500
Final-Recipient: rfc822; email@example.com
Status: 5.3.0 (other or undefined mail system status)
Remote-MTA: dns; aspmx.l.google.com
unable to email to you.eml
unable to email to you
Kurt Faasse <firstname.lastname@example.org>
11/30/2023, 11:42 AM
Unable to get email through to your server. test.
This email has been checked for viruses by AVG antivirus software.
Do not reply that his is an issue with my ISP. It is not. It is purely a Thunderbird issue. Thanks for your time.