echo "Subject: test" | /usr/lib/sendmail -v nicoANTISPAM@gmail.comgmail.com
WARNING: local host name (nico) is not qualified; see cf/README: WHO AM I?
nicoANTISPAM@gmail.comgmail.com... Connecting to [127.0.0.1] via relay...
220 nico ESMTP Sendmail 8.14.4/8.14.4/Debian-4.1ubuntu1; Thu, 5 May 2016 18:26:29 +0200; (No UCE/UBE) logging access from: localhost(OK)-localhost [127.0.0.1]
>>> EHLO nico
250-nico Hello localhost [127.0.0.1], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-EXPN
250-VERB
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-AUTH DIGEST-MD5 CRAM-MD5
250-DELIVERBY
250 HELP
>>> VERB
250 2.0.0 Verbose mode
>>> MAIL From:<root@nico> SIZE=14 AUTH=root@nico
250 2.1.0 <root@nico>... Sender ok
>>> RCPT To:<nicoANTISPAM@gmail.comgmail.com>
>>> DATA
250 2.1.5 <nicoANTISPAM@gmail.comgmail.com>... Recipient ok
354 Enter mail, end with "." on a line by itself
>>> .
050 <nicoANTISPAM@gmail.comgmail.com>... Connecting to gmail-smtp-in.l.google.com. via esmtp...
050 220 mx.google.com ESMTP lb10si12534262wjc.203 - gsmtp
050 >>> EHLO nico
050 250-mx.google.com at your service, [151.53.148.87]
050 250-SIZE 157286400
050 250-8BITMIME
050 250-STARTTLS
050 250-ENHANCEDSTATUSCODES
050 250-PIPELINING
050 250-CHUNKING
050 250 SMTPUTF8
050 >>> STARTTLS
050 220 2.0.0 Ready to start TLS
050 >>> EHLO nico
050 250-mx.google.com at your service, [151.53.148.87]
050 250-SIZE 157286400
050 250-8BITMIME
050 250-ENHANCEDSTATUSCODES
050 250-PIPELINING
050 250-CHUNKING
050 250 SMTPUTF8
050 >>> MAIL From:<root@nico> SIZE=296
050 250 2.1.0 OK lb10si12534262wjc.203 - gsmtp
050 >>> RCPT To:<nicoANTISPAM@gmail.comgmail.com>
050 >>> DATA
050 250 2.1.5 OK lb10si12534262wjc.203 - gsmtp
050 354  Go ahead lb10si12534262wjc.203 - gsmtp
050 >>> .
050 550-5.7.1 [151.53.148.87] The IP you're using to send mail is not authorized to
050 550-5.7.1 send email directly to our servers. Please use the SMTP relay at your
050 550-5.7.1 service provider instead. Learn more at
050 550 5.7.1  https://support.google.com/mail/answer/10336 lb10si12534262wjc.203 - gsmtp
050 <root@nico>... Connecting to local...
050 <root@nico>... Sent
250 2.0.0 u45GQTev012989 Message accepted for delivery
nicoANTISPAM@gmail.comgmail.com... Sent (u45GQTev012989 Message accepted for delivery)
Closing connection to [127.0.0.1]
>>> QUIT
221 2.0.0 nico closing connection
You have new mail in /var/mail/root