Email configuration

[GRoston]

I send emails with the FROM being my personal email address. However, the emails are sent by a remote SMTP service whose domain is not mine. I strongly suspect, based on some evidence I have seen, that my emails are failing the SPF alignment test. Note that SPF and DKIM are both properly setup. Can anyone suggest a way to resolve this issue?

 

[file3456]

You can go to the MXtoolbox website and verify the records. Use the supertool option.

This also may be important. What is email spoofing? | Proton

This also may be of interest. How to Spot Any Spoofed & Fake Email (Ultimate Guide) - YouTube

Under General, scroll to the bottom and click the Config Editor button.
Click the Tools menu, select Options (on a Mac, select Thunderbird and then Preferences), click the Advanced icon, then the General tab and click the Config Editor button.

Resource Center - Installing and Configuring Thunderbird - Hamilton College

This Pref exists in Thunderbird and Firefox.