220 ob1001.coreserver.jp ESMTP 250-ob1001.coreserver.jp 250-STARTTLS 250-PIPELINING 250-8BITMIME 250-AUTH LOGIN PLAIN CRAM-MD5 250 SIZE 2048000000
220 ob1001.coreserver.jp ESMTP\r\n
+OK <14566.1713988782@ob1001.coreserver.jp> -ERR authorization first
+OK <928429.1713954318@ob1001.coreserver.jp> -ERR authorization first