I think he's thinking of dkim https://mxtoolbox.com/dkim.aspx
I think he's thinking of dkim https://mxtoolbox.com/dkim.aspx
Maybe. There's an organization that registers spam domains and all the freebie email hosts check against that list. If your address or domain is on that list, anything from you goes straight into a black hole.
Maybe. There's an organization that registers spam domains and all the freebie email hosts check against that list. If your address or domain is on that list, anything from you goes straight into a black hole.
You have to have your headers, reverse dns, etc ad naseum correct and even then you have to not have your domain listed in a spam clearinghouse or all the major free email providers will shuffle your emails into the junk folder.
Setting it up from scratch isn't as easy as just flipping a switch, opening a port, and sending.