Hello I had the same problem on my first VPS , now that I have switched it again it happens , but I'm not able to find the problem . ( I'm using ISPConfig ) Doing tests , from gmail/hotmail I am able to receive , but to send emails no. From roundcube shows that the message has been sent , but nothing happens . Following my old thread , I will link some logs so maybe you can find where the problem is coming from . ##### cat /var/log/mail.log #I'm replacing my domain by xxxxx ##### Expand: log/mail.log Jul 7 14:15:31 server1 dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=22603, secured, session=<jCwWchWNgNB/AAAB> Jul 7 14:15:31 server1 dovecot: imap([email protected]): Logged out in=70 out=649 Jul 7 14:15:32 server1 dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=22605, secured, session=<wfEmchWNgtB/AAAB> Jul 7 14:15:32 server1 dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=22607, secured, session=<CKQnchWNhNB/AAAB> Jul 7 14:15:32 server1 dovecot: imap([email protected]): Logged out in=318 out=4500 Jul 7 14:15:32 server1 dovecot: imap([email protected]): Logged out in=233 out=1058 Jul 7 14:15:33 server1 postfix/qmgr[1312]: D3139809EF: from=<[email protected]>, size=1752, nrcpt=1 (queue active) Jul 7 14:15:34 server1 dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=22612, secured, session=<NuFBchWNjNB/AAAB> Jul 7 14:15:34 server1 dovecot: imap([email protected]): Logged out in=32 out=485 Jul 7 14:15:34 server1 dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=22614, secured, session=<gctDchWNjtB/AAAB> Jul 7 14:15:34 server1 dovecot: imap([email protected]): Logged out in=44 out=592 Jul 7 14:15:55 server1 postfix/smtpd[22628]: connect from localhost[127.0.0.1] Jul 7 14:15:55 server1 postfix/trivial-rewrite[22608]: warning: do not list domain xxxxx..com in BOTH virtual_mailbox_domains and relay_domains Jul 7 14:15:55 server1 postfix/trivial-rewrite[22608]: warning: do not list domain xxxxx..com in BOTH virtual_mailbox_domains and relay_domains Jul 7 14:15:55 server1 postfix/smtpd[22628]: NOQUEUE: filter: RCPT from localhost[127.0.0.1]: <[email protected]>: Sender address triggers FILTER amavis:[127.0.0.1]:10026; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<www.xxxxx.com> Jul 7 14:15:55 server1 postfix/smtpd[22628]: 9676C80A7E: client=localhost[127.0.0.1], sasl_method=LOGIN, [email protected] Jul 7 14:15:55 server1 postfix/cleanup[22629]: 9676C80A7E: message-id=<[email protected]> Jul 7 14:15:55 server1 postfix/qmgr[1312]: 9676C80A7E: from=<[email protected]>, size=626, nrcpt=1 (queue active) Jul 7 14:15:55 server1 postfix/smtpd[22628]: disconnect from localhost[127.0.0.1] ehlo=1 auth=1 mail=1 rcpt=1 data=1 quit=1 commands=6 Jul 7 14:15:55 server1 dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=22632, secured, session=<XVKIcxWNoNB/AAAB> Jul 7 14:15:55 server1 dovecot: imap([email protected]): Logged out in=470 out=648 Jul 7 14:15:55 server1 postfix/smtpd[22635]: connect from localhost[127.0.0.1] Jul 7 14:15:55 server1 postfix/trivial-rewrite[22608]: warning: do not list domain xxxxx..com in BOTH virtual_mailbox_domains and relay_domains Jul 7 14:15:55 server1 postfix/smtpd[22635]: E13A380A82: client=localhost[127.0.0.1] Jul 7 14:15:55 server1 postfix/cleanup[22629]: E13A380A82: message-id=<[email protected]> Jul 7 14:15:55 server1 postfix/qmgr[1312]: E13A380A82: from=<[email protected]>, size=1577, nrcpt=1 (queue active) Jul 7 14:15:55 server1 amavis[1723]: (01723-01) Passed CLEAN {RelayedOutbound}, ORIGINATING LOCAL [127.0.0.1]:37698 <[email protected]> -> <[email protected]>, Queue-ID: 9676C80A7E, Message-ID: <[email protected]>, mail_id: y2Y7m1NAv6Po, Hits: -1, size: 626, queued_as: E13A380A82, dkim_new=default:xxxxx..com, 262 ms Jul 7 14:15:55 server1 postfix/smtp[22630]: 9676C80A7E: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10026, delay=0.36, delays=0.08/0.01/0.03/0.24, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10027): 250 2.0.0 Ok: queued as E13A380A82) Jul 7 14:15:55 server1 postfix/qmgr[1312]: 9676C80A7E: removed Jul 7 14:15:56 server1 dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=22639, secured, session=<Z0iTcxWNqtB/AAAB> Jul 7 14:15:56 server1 dovecot: imap([email protected]): Logged out in=70 out=633 Jul 7 14:15:56 server1 dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=22641, secured, session=<sT+acxWNrNB/AAAB> Jul 7 14:15:56 server1 dovecot: imap([email protected]): Logged out in=318 out=4484 Jul 7 14:15:56 server1 dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=22644, secured, session=<lMCacxWNrtB/AAAB> Jul 7 14:15:56 server1 dovecot: imap([email protected]): Logged out in=120 out=766 Jul 7 14:16:03 server1 postfix/smtp[22610]: connect to gmail-smtp-in.l.google.com[108.177.119.26]:25: Connection timed out Jul 7 14:16:03 server1 postfix/smtp[22610]: connect to gmail-smtp-in.l.google.com[2a00:1450:4013:c05::1b]:25: Network is unreachable Jul 7 14:16:03 server1 postfix/smtp[22610]: connect to alt1.gmail-smtp-in.l.google.com[2404:6800:4003:c00::1b]:25: Network is unreachable ######## cat /etc/postfix/master.cf ####### Expand: /etc/postfix/master.cf VKIcxWNoNB/AAAB> bash: syntax error near unexpected token `newline' root@server1:~# Jul 7 14:15:55 server1 dovecot: imap([email protected]): Logged out in=470 out=648 bash: syntax error near unexpected token `(' root@server1:~# Jul 7 14:15:55 server1 postfix/smtpd[22635]: connect from localhost[127.0.0.1] bash: Jul: command not found root@server1:~# Jul 7 14:15:55 server1 postfix/trivial-rewrite[22608]: warning: do not list domain xxxx.com in BOTH virtual_mailbox_domains and relay_domains bash: Jul: command not found root@server1:~# Jul 7 14:15:55 server1 postfix/smtpd[22635]: E13A380A82: client=localhost[127.0.0.1] bash: Jul: command not found root@server1:~# Jul 7 14:15:55 server1 postfix/cleanup[22629]: E13A380A82: message-id=<[email protected]> bash: syntax error near unexpected token `newline' root@server1:~# Jul 7 14:15:55 server1 postfix/qmgr[1312]: E13A380A82: from=<[email protected]>, size=1577, nrcpt=1 (queue active) bash: syntax error near unexpected token `(' root@server1:~# Jul 7 14:15:55 server1 amavis[1723]: (01723-01) Passed CLEAN {RelayedOutbound}, ORIGINATING LOCAL [127.0.0.1]:37698 <[email protected]> -> <[email protected]>, Queue-ID: 9676C80A7E, Message-ID: <[email protected]>, mail_id: y2Y7m1NAv6Po, Hits: -1, size: 626, queued_as: E13A380A82, dkim_new=default:xxxx.com, 262 ms bash: syntax error near unexpected token `(' root@server1:~# Jul 7 14:15:55 server1 postfix/smtp[22630]: 9676C80A7E: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10026, delay=0.36, delays=0.08/0.01/0.03/0.24, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10027): 250 2.0.0 Ok: queued as E13A380A82) bash: syntax error near unexpected token `(' root@server1:~# Jul 7 14:15:55 server1 postfix/qmgr[1312]: 9676C80A7E: removed bash: Jul: command not found root@server1:~# Jul 7 14:15:56 server1 dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=22639, secured, session=<Z0iTcxWNqtB/AAAB> bash: syntax error near unexpected token `newline' root@server1:~# Jul 7 14:15:56 server1 dovecot: imap([email protected]): Logged out in=70 out=633 bash: syntax error near unexpected token `(' root@server1:~# Jul 7 14:15:56 server1 dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=22641, secured, session=<sT+acxWNrNB/AAAB> bash: syntax error near unexpected token `newline' root@server1:~# Jul 7 14:15:56 server1 dovecot: imap([email protected]): Logged out in=318 out=4484 bash: syntax error near unexpected token `(' root@server1:~# Jul 7 14:15:56 server1 dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=22644, secured, session=<lMCacxWNrtB/AAAB> bash: syntax error near unexpected token `newline' root@server1:~# Jul 7 14:15:56 server1 dovecot: imap([email protected]): Logged out in=120 out=766 bash: syntax error near unexpected token `(' root@server1:~# Jul 7 14:16:03 server1 postfix/smtp[22610]: connect to gmail-smtp-in.l.google.com[108.177.119.26]:25: Connection timed out bash: Jul: command not found root@server1:~# Jul 7 14:16:03 server1 postfix/smtp[22610]: connect to gmail-smtp-in.l.google.com[2a00:1450:4013:c05::1b]:25: Network is unreachable bash: Jul: command not found root@server1:~# Jul 7 14:16:03 server1 postfix/smtp[22610]: connect to alt1.gmail-smtp-in.l.google.com[2404:6800:4003:c00::1b]:25: Network is unreachable Thanks for the help and your time.
Hello @Taleman , Sadly I found that Google blocks the port 25 ( for all his products ) , apparently to eliminate any kind of mail spamming and to keep the IP '' reputation '' . So I have to take a look about third party mail services . Thank you for taking a look
I was using sendgrid for mail relay with google cloud...they have free plans. Or you could change vps service provider to Vultr (if in your country), they don't block ports and are half the price
