https://support.gfi.com/article/112443-error-regular-expression-too-big-when-purbl-looks-up-urls-in-an-email
Error: 'Regular expression too big' when PURBL looks up URLs in an email - GFI Support
Mar 18, 2025 - Versions / Builds Affected2012 / 20121218 StatusResolved Problem SummaryWhen receiving certain email...