I have been using this dockerized mailserver to set up a mailserver and webmail for my company.
I have followed all official instructions in order to avoid emails ending in spam-folders:
- SpamAssassin validates my emails
- SPF (my server xx.xx.xx is authorized to use the mail-address)
- DKIM signature is valid
- Message parsed DMARC test
- Reverse proxy is working
Mails from my server scores a solid 10/10 on mail-tester.com
Problem: Emails send by my server ends up in spam-folders, tested on Yahoo and Hotmail (works on gmail).
My mxtoolbox.com test looks like this:
Question: What can I do to avoid ending up in spam-folders?
Please note: Even though similar questions has been asked on serverfault, I have not found a solution to this problem.
