I use Windows Live Mail and eMclient and when I try to send a email to an online store that has a Gmail account, it is blocked and the reason is “550, “5.7.26”, “This message does not have authentication information or fails to pass authentication checks (SPF or DKIM). To best protect our users from spam, the message has been blocked.
Does anyone know how to solve this.
I’m on win10 22H2.