Thunderbird: форум сообщества

My business has two domains. I can send email to a Gmail account holder using the primary domain with no issues. But amy emails from what I call the "secondary" domain below are treated as spam. This occurs with two different email addresses using the secondary domain.

Both domains are hosted with Bluehost. Exhaustive research has revealed the following:

• Settings in Thunderbird are exactly the same, e.g. ports, security, SSL/TLS, etc. for each domain.
• There is no subject line or content that could possibly be regarded as spam.
• MXToolbox indicates that the secondary domain is not on any blacklist.
• Extended support via Bluehost reveals that SPF, DKIM, and DMARC records are all correct.
• Email sent to a Gmail account using the CPanel (Roundcube) is not flagged as spam. Only emails sent via Thunderbird are flagged.
• Emails sent to a Gmail account from the secondary domain using my mobile phone, but still on the same network/IP address, are not flagged as spam.
• If I first send an email to one of the secondary domain emails FROM Gmail, then reply to it, the reply is not flagged as spam.

After many hours of head scratching (and later, head banging), I am pretty much at my wit's end with this problem. I'm an electronic engineer but this one is definitely out of my wheelhouse. Any help would most certainly be appreciated!

Thanks in advance, Don

Hi, I have a problem with hundreds of Casino type emails filling up my spam folder so I asked AI for help. AI suggested I change my mail handeling from Standard to Strict. Ever since then it will not stay on Standard, it keeps reverting to Strict every time I try to revert it back, therefore all my wanted emails go straight to Spam. I need to check through heaps of Casino emails and take out my wanted emails which is so annoying!! How can I change it back so as it stays changed? I will not ask AI for help ever again, it was working fine until I changed it. Ugh.

I am not sure how to find out what version Thunderbird is, how do I find out please. It should be up to date as I have everything set on automatic up date.

I use an HP Laptop, windows 11.

I read that "Once a message is marked as junk, it will disappear from the main inbox view and be relocated to the specified junk folder." However, that does not happen. Once I mark a message as spam, it just has a red mark next to it and I have to go to Tools and have it "delete mail marked as spam from folder".

I have 2 email accounts accessed by thunderbird, after the last update it appears that the secondary account is sending the incoming messages directly to the trash folder can you look into this or can I revert to the previous version?