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File: //opt/bitninja-waf3/coreruleset/regex-assembly/932300.ra
##! Please refer to the documentation at
##! https://coreruleset.org/docs/development/regex_assembly/.

##!^ (?is)\r\n.*?\b

##! - SMTP Commands
EHLO [a-zA-Z-\.]{1,255}
HELO [a-zA-Z-\.]{1,255}
MAIL FROM:<.{1,64}@.{1,255}>
RCPT TO:(?:<.{1,64}@.{1,255}>|(?: ))?<.{1,64}>
VRFY (?:.{1,64} <.{1,64}@.{1,255}>|.{1,64}@.{1,255})
EXPN (?:.{1,64})
AUTH [A-Z0-9-_]{1,20} (?:=|(?:[\w+/]{4})*(?:[\w+/]{2}==|[\w+/]{3}=))

##! - SMTP Commands without params
STARTTLS\b
RSET\b
NOOP\b(?: .{1,255})?