RE: Sendees Some get my emails, some don't, some get it but labeled spoof, some it activates their antivirus.
Some of my emails (whether with or without and attachment) are not being received. Doesn't seem to matter if it is a group of emails from a mailing list , or to an individual email address, some get the email, some don't, some get a message marking it spoof but are able to view it, some get it sent right to their personal antivirus software for processing. Norton techs (my antivirus) were nice enough to go through my entire system and have labeled it virus free. They told me to contact Thunderbird (you guys) because they do not support Thunderbird. Like the idea of using Thunderbird, otherwise the big boys run it all. But if I can't find a solution to this, I don't think I will have a choice. Hope you can help.
Additional System Details
- User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:72.0) Gecko/20100101 Firefox/72.0
It sounds like your emails are being labelled as 'Spam' or you have remote content attached to an image or are getting an attachment from whatever is scanning your outgoing mail.
Servers scan incoming mail using their Anti-Spam filters. Some servers will not like the email and simply delete it, so it never gets to recipient Inbox. Some servers will label that email as 'Spam' and put in the recipient 'Spam' folder.
If your personal computer IP address or the outgoing server IP address has been blacklisted then a server may block/delete email. Spam labelling can occur for several reasons. Content looks like spam or spoof email. It might have too many links or remote content.
Some people have Anti-Virus products running that scan outgoing mail and they attach a file or additional content to the email.
Thunderbird is not the cause.
Let's see what happens if you send an email to me. I'll check content etc. Please choose an email that you know got that error message as shown in posted image and send same content to me in a new Write message. Email: mail at anje dot co dot uk I've written email address in that manner so that spider bots cannot read it from a public forum. But replace the 'at' with a '@' and the 'dot' with a full stop/period.
Just to let you know that I received all five emails. I individually scanned each email and each attachment and all scanned as good.
Are you sending emails for that particular email address via the correct smtp server?
I'll send email to you with more details as they could be sensitive.
It would seem you needed to check the outgoing server as the email address was being relayed. This may be the reason for some servers thinking the email was spoofed. Good to hear you are managing to send again.