iRedMail receiving but nor sending

Hi I have followed your tutorial to install iRedMail on a droplet from your YT channel, but when I try to send an email to Gmail it’s says sent but receive nothing in Gmail. I can receive sent emails from Gmail and Hotmail, here is my log file:

Dec 29 03:33:35 mail postfix/postscreen[2373]: CONNECT from [127.0.0.1]:40264 to [127.0.0.1]:25 Dec 29 03:33:35 mail postfix/postscreen[2373]: WHITELISTED [127.0.0.1]:40264 Dec 29 03:33:35 mail postfix/smtpd[2374]: connect from mail.mydomain.ga[127.0.0.1] Dec 29 03:33:35 mail postfix/smtpd[2374]: DFE764321A: client=mail.mydomain.ga[127.0.0.1] Dec 29 03:33:35 mail postfix/cleanup[2385]: DFE764321A: message-id=743-5a45b780-1-789d5680@89882177 Dec 29 03:33:35 mail postfix/qmgr[2056]: DFE764321A: from=me@mydomain.ga, size=1031, nrcpt=1 (queue active) Dec 29 03:33:35 mail postfix/smtpd[2374]: disconnect from mail.mydomain.ga[127.0.0.1] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5 Dec 29 03:33:36 mail postfix/10025/smtpd[2397]: connect from mail.mydomain.ga[127.0.0.1] Dec 29 03:33:36 mail postfix/10025/smtpd[2397]: 4747143218: client=mail.mydomain.ga[127.0.0.1] Dec 29 03:33:36 mail postfix/cleanup[2385]: 4747143218: message-id=743-5a45b780-1-789d5680@89882177 Dec 29 03:33:36 mail postfix/qmgr[2056]: 4747143218: from=me@mydomain.ga, size=1532, nrcpt=1 (queue active) Dec 29 03:33:36 mail postfix/10025/smtpd[2397]: disconnect from mail.mydomain.ga[127.0.0.1] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5 Dec 29 03:33:36 mail amavis[2094]: (02094-02) Passed CLEAN {RelayedInternal}, MYNETS LOCAL [127.0.0.1]:40264 me@mydomain.ga -> XXXX@gmail.com, Queue-ID: DFE764321A, Message-ID: 743-5a45b780-1-789d5680@89882177, mail_id: x2BYZcE0AMhk, Hits: -1.009, size: 1031, queued_as: 4747143218, 348 ms, Tests: [ALL_TRUSTED=-1,HTML_MESSAGE=0.001,T_RP_MATCHES_RCVD=-0.01] Dec 29 03:33:36 mail postfix/amavis/smtp[2390]: DFE764321A: to=XXXX@gmail.com, relay=127.0.0.1[127.0.0.1]:10024, delay=0.5, delays=0.12/0/0.02/0.35, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as 4747143218) Dec 29 03:33:36 mail postfix/qmgr[2056]: DFE764321A: removed Dec 29 03:34:06 mail postfix/smtp[2425]: connect to gmail-smtp-in.l.google.com[173.194.206.26]:25: Connection timed out Dec 29 03:34:06 mail postfix/smtp[2425]: connect to gmail-smtp-in.l.google.com[2607:f8b0:400d:c08::1a]:25: Network is unreachable Dec 29 03:34:36 mail postfix/smtp[2425]: connect to alt1.gmail-smtp-in.l.google.com[64.233.186.27]:25: Connection timed out Dec 29 03:34:36 mail postfix/smtp[2425]: connect to alt1.gmail-smtp-in.l.google.com[2800:3f0:4003:c00::1b]:25: Network is unreachable Dec 29 03:35:06 mail postfix/smtp[2425]: connect to alt2.gmail-smtp-in.l.google.com[209.85.203.27]:25: Connection timed out

I did a traceroute: traceroute to gmail-smtp-in.l.google.com (173.194.208.27), 30 hops max, 60 byte packets 1 * * * 2 * * * 3 * * * 4 * * * 5 * * * 6 * * * 7 * * * 8 * * * 9 * * * 10 * * * 11 * * * 12 * * * 13 * * * 14 * * * 15 * * * 16 * * * 17 * * * 18 * * * 19 * * * 20 * * * 21 * * * 22 * * * 23 * * * 24 * * * 25 * * * 26 * * * 27 * * * 28 * * * 29 * * * 30 * * *

Thank you in advance.