Invalid “Reply-To” on multiple sites

  • Resolved jason1995

    (@jason1995)


    3 years, 3 months ago

    Since a week or two or so, I suddenly receive the following errors:

    Invalid “Reply-To” e-mail address “[email protected]”

    a second site of mine got:

    Invalid “Reply-To” e-mail address “[email protected]”

    a third site of mine got:

    Invalid “Reply-To” e-mail address “[email protected]”

    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.

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  • Hi @jason1995,

    Sorry that I am only just getting around to reading your forum post and replying to you. I have been super busy lately, and this is the first opportunity I’ve had to respond.

    I strongly suspect that the tailing zero is the problem here. Are you sending from a contact form plugin of some kind like Contact Form 7 or Gravity Forms? If so, please check that there is not a zero anywhere in the to field. It’s really easy to type one by accident on the end, but I’ve never seen Post SMTP do this. ??

    Kind Regards,
    Tim

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