Trying to set up an email server global filter in cPanel (Paper Lantern).
Trying to find strings of for example:
SSS
that is SSS alone on a line,
but then not matching for example:
aaaSSSaaa
and not matching for example
aaaSSS
and not matching for example
SSSaaa
Got as far as SSS(\r\n|\r|\n) that work in some cases.
But for example (\r\n|\r|\n)SSS(\r\n|\r|\n) to cover all cases will not work...
(?m)^SSS$ works in a Regex test environment but not in cPanel for some reason....
Any ideas?