Hi All, Just a quick question - I've compiled FR3 with pcre regex libraries and it's working ok. I just can't get it to escape plusses ( + ) though I've tried between 0 and 6(!) backslashes but all result in: ERROR: Failed compiling regular expression: bad range inside [] at offset 10 (0) ERROR: Condition evluation failed because the value of an operand could not be determined It's the + in the character class I'm trying to escape. This is with two backslashes (what I'd expect to work as it does with dots - \\. (0) ? if ("%{Email-Address}" =~ /^[a-z0-9_-\+]+(\.[a-z0-9_-\\\+])*@[a-z0-9_-\\\+]+(\.[a-z0-9_-\\\+]+)*(\ .[a-z]{2,4})$/) (0) expand: "%{Email-Address}" -> 'a+b@c.de' ERROR: Failed compiling regular expression: bad range inside [] at offset 10 (0) ERROR: Condition evluation failed because the value of an operand could not be determined The regex works ok without the plusses, if not including them in the subject.. Thanks Andy