File: //proc/thread-self/root/proc/self/root/usr/local/modsecurity-crs/regex-assembly/932300.ra
##! Please refer to the documentation at
##! https://coreruleset.org/docs/development/regex_assembly/.
##!+ i
##!^ \r\n.*?\b
##! SMTP Commands
EHLO\s[a-z.-]{1,255}
HELO\s[a-z.-]{1,255}
MAIL\sFROM:<.{1,64}@.{1,255}>
RCPT\sTO:(?:<.{1,64}@.{1,255}>|(?: ))?<.{1,64}>
VRFY\s(?:.{1,64}\s<.{1,64}@.{1,255}>|.{1,64}@.{1,255})
EXPN\s(?:.{1,64})
AUTH\s[a-z0-9_-]{1,20}\s(?:=|(?:[\w+/]{4})*(?:[\w+/]{2}==|[\w+/]{3}=))
##! SMTP Commands without params
STARTTLS\b
RSET\b
NOOP\b(?:\s.{1,255})?