Thunderbird Community Forum

Good day support team, I had this sending message error show on my Thunderbird desktop when I try to send Annual Report to my members. I had tested to send through Bcc to 50 recipients and not sure how many is going through or not even one is going through. This is due to the over limit of the recipients I send through Bcc or recipient "bcl5157@gmail.com" account as show on the attached screenshot picture had problem? For this scenario, is it better to create a Mailing list instead?

Thank you in advance.

Regards Jim

Here's what I see: This is a very specific server. We tried connecting to your servers from various IP addresses, but all connection attempts were rejected with error messages similar to the one you sent me. I get the impression that you need to contact them to ask them to accept connections from the IP addresses to which emails are to be sent. I suggest contacting your point of contact at this domain through other means, whether by phone, WhatsApp, or another email address they receive—perhaps one from Germany—and asking your provider to adjust the settings so that emails sent from the IP address 148.251.119.178 are accepted. You can point out that our server is legitimate, does not send spam, is not on any blacklists, and uses all protocols for validating email delivery, including SPF, DKIM, and DMARC.

This email address cannot send me emails because they keep getting bounced back to the sender. All other email addresses work, just this one doesn't.

For some reason, Thunderbird is prematurely word wrapping (or inserting line breaks) on emails that are sent.

I'm using default 'HTML Style' Defaults, but have also messed around with those to see if I can fix the issue - to no avail.

I found an old 'question' on the support site where this seemed to have been resolved (https://support.mozilla.org/en-US/questions/1307490). Unfortunately, the Solution doesn't appear to apply to modern Thunderbird versions (e.g., version 148); I can't find the suggested setting to change.