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Activation email and 'X-Authentication-Warning'

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  • Activation email and 'X-Authentication-Warning'

    Hi, I am trying to solve my own email issues to get better delivery success rate.

    We did not have -f parameter enabled to start with and I read here that setting that to yes might help with SPAM filters. Seeming to confirm that was an email from a user that said:

    My mail server was filtering messages that have the 'X-Authentication-Warning' header in them and putting them into my SPAM mailbox. ... It might be smart to remove that X-Authentication-Warning header as well; apparently your mail command adds it unless you use -f to set the sender.

    So, on Oct 3 we enabled it as a test. The result was that no mails were then sent out. Post notifications or Activation emails. I ran the diagnostic tool in Vb on email and it confirmed this. I set -f to off and we are back in business.

    So, any advice for how to get the "X-Authentication-Warning" off the mail without -f enabled, or, alternatively, suggest where to look for understanding why -f killed mail?

    Thanks in advance,

  • #2
    Hmm, why am I starting to feel like chopped liver on these boards . . .


    • #3
      AFAICT this is a server-related issue. Unfortunately I don't have any solutions for you, otherwise I would have posted something.
      Steve Machol, former vBulletin Customer Support Manager (and NOT retired!)
      Change CKEditor Colors to Match Style (for 4.1.4 and above)

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      Mankind is the only creature smart enough to know its own history, and dumb enough to ignore it.


      • #4
        Unofficaly if your having an issue with the server you could try using SMPT, you can find it at


        widgetinstance 262 (Related Topics) skipped due to lack of content & hide_module_if_empty option.