configurando postfix smtp para envio de email

[LucasSilva1994]

Pessoal, estou configurando postfix em um debian que esta com minha aplicação glpi ,quero que o glpi envie emails de notificação de chamado .
Nosso servidor de email é o google.

Fiz as config, porém o email test nao esta chegando, preciso de ajuda.

Syslog :

ug 18 16:29:42 debian-buster-1 postfix/cleanup[6878]: 7C746E0A82: message-id=<[email protected]>
Aug 18 16:29:42 debian-buster-1 postfix/qmgr[6555]: 7C746E0A82: from=<[email protected]>, size=315, nrcpt=1 (queue active)
Aug 18 16:29:42 debian-buster-1 postfix/smtp[6880]: connect to smtp.gmail.com[2607:f8b0:400c:c07::6c]:587: Network is unreachable
Aug 18 16:29:42 debian-buster-1 postfix/smtp[6880]: 7C746E0A82: to=<[email protected]>, relay=smtp.gmail.com[173.194.214.108]:587, delay=33, delays=33/0.01/0.05/0, dsn=5.7.0, status=bounced (host smtp.gmail.com[173.194.214.108] said: 530 5.7.0 Must issue a STARTTLS command first. u82sm1722521vsc.1 - gsmtp (in reply to MAIL FROM command))
Aug 18 16:29:42 debian-buster-1 postfix/cleanup[6878]: 8F724E0A83: message-id=<[email protected]>
Aug 18 16:29:42 debian-buster-1 postfix/qmgr[6555]: 8F724E0A83: from=<>, size=2692, nrcpt=1 (queue active)
Aug 18 16:29:42 debian-buster-1 postfix/bounce[6881]: 7C746E0A82: sender non-delivery notification: 8F724E0A83
Aug 18 16:29:42 debian-buster-1 postfix/qmgr[6555]: 7C746E0A82: removed
Aug 18 16:29:42 debian-buster-1 postfix/local[6882]: 8F724E0A83: to=<[email protected]>, relay=local, delay=0.02, delays=0/0.01/0/0, dsn=2.0.0, status=sent (delivered to mailbox)
Aug 18 16:29:42 debian-buster-1 postfix/qmgr[6555]: 8F724E0A83: removed