SMTP SPF Failure

  • Resolved norfsie

    (@norfsie)


    1 year, 3 months ago

    Hi there,

    I am the admin of 2 separate WordPress sites and I’m having issues with the Post SMTP plugin.

    Website 1: https://lifeready.com.au 

    On one of my sites, I have setup Post SMTP to send via Proofpoint. I can see in the settings that; Postman will send mail via ??SMTP-STARTTLS to outbound-us1.ppe-hosted.com:587 using Password (Login) authentication.

    When I do the test email for this, I can see the email comes from the IP 148.163.129.49 and is delivered without any issues. This passes SPF etc.

    Website 2: https://www.hbfphysio.com.au 

    However, on the second site it doesn’t seem to work the same. Looking at Post SMTP I can see that the settings show Postman will send mail via ??SMTP-STARTTLS to outbound-us1.ppe-hosted.com:587 using Password (Login) authentication. However, when doing the test email each email comes from a different IP within the range of 34.116.64.47, 35.244.81.13 and 34.151.99.100.

    These all look to be Google mail servers? Why would Post SMTP not be sending via Proofpoint for this setup?

    Both websites use SMTP Authenticated credentials from Proofpoint and have been setup the exact same.

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  • Hi @norfsie,

    I hope this message finds you well.

    Thank you for contacting us regarding the issue you are facing. It seems like the issue from your domain side. SPF, DMARC, or DKIM records might not be configured properly. Kindly, configure it, if you need further assistance you can contact on our?technical support channel?so that we can connect you directly with our technical team.

    Thanks and Regards,
    Support Team-WP Experts.

Viewing 1 replies (of 1 total)
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