WordPress Form Submission Failures Undetected by Server Logs
October 18, 2026
Testing revealed that 93% of 31 WordPress sites on a specific server reported successful form submissions despite emails failing to leave the mail program. The server accepts the message and marks it deferred, creating a false positive in the application layer.
HOW THIS AFFECTS YOU
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builderYou should implement end-to-end verification that checks actual inbox delivery rather than relying on local server success signals.