Add message pattern defined in srvrsmtp.c of sendmail 8.15.2
Add message pattern defined in srvrsmtp.c of sendmail 8.15.2

azumakuniyuki/p5-Sisimai,jcbf/Sisimai,jcbf/Sisimai,sisimai/p5-Sisimai,azumakuniyuki/p5-Sisimai