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Since a week or two or so, I suddenly receive the following errors:
Invalid “Reply-To” e-mail address “kit@holdingil.com0”
a second site of mine got:
Invalid “Reply-To” e-mail address “malcolm@liveloveandshinewithshannon.com0”
a third site of mine got:
Invalid “Reply-To” e-mail address “malcolm@liveloveandshinewithshannon.com0”
When checking the settings, nothing is out of the ordinary, also nothing has been changes on these sites for ages, just the standard updating of plugins and theme. Post SMTP is on the latest version to.
I have no idea where these email addresses come from and as you probably notice, there is this strange zero attached to them as well.