John Golden

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3. Intermittent external SMTP connections returning local Exim certificate (CSF-related?)

Thank you, this seems to have pointed us in the right direction. After disabling the WHM “SMTP Tweak” option, external SMTP delivery started working correctly again for the affected Drupal sites, a...

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• John Golden
• May 15, 2026 06:32
• 0 votes

1. Community
2. Email
3. Intermittent external SMTP connections returning local Exim certificate (CSF-related?)

Thanks for the feedback.We understand that opening a ticket in a broken state would be ideal, however in our case this is difficult because the affected systems are production environments and emai...

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• John Golden
• May 06, 2026 06:23
• 0 votes