HTTP/1.1 101 Switching Protocols
Server: sendmail
Connection: Upgrade
Upgrade: SMTP
220 furu.g.aas.no ESMTP Sendmail 8.7.6/8.6.12 ready at Thu, 2 Apr 1998 23:45:30 +0200
221 furu.g.aas.no closing connection
HTTP/1.1 101 Switching Protocols
Server: sendmail
Connection: Upgrade
Upgrade: SMTP
220 furu.g.aas.no ESMTP Sendmail 8.7.6/8.6.12 ready at Thu, 2 Apr 1998 23:45:30 +0200
221 furu.g.aas.no closing connection