Hi, Created single ispconfig server with web, DB, DNS, mail all in a single server. Added a client and Domain, created an email account, and to that mail, emails are receiving from external Domain but unable to send any mail from that domain to external domain.
There is a thread at the top of this forum: "Read before posting!" https://www.howtoforge.com/community/threads/please-read-before-posting.58408/
Here is the mail.log content Code: Jun 1 21:58:17 cp postfix/smtpd[4873]: connect from localhost[127.0.0.1] Jun 1 21:58:17 cp postfix/smtpd[4873]: 5FDBD41C9C: client=localhost[127.0.0.1] Jun 1 21:58:17 cp postfix/cleanup[4858]: 5FDBD41C9C: message-id=<[email protected]> Jun 1 21:58:17 cp postfix/smtpd[4873]: disconnect from localhost[127.0.0.1] ehlo=1 mail=1 rcpt=2 data=1 quit=1 commands=6 Jun 1 21:58:17 cp postfix/qmgr[1763]: 5FDBD41C9C: from=<[email protected]>, size=16169, nrcpt=2 (queue active) Jun 1 21:58:17 cp amavis[2274]: (02274-02) Passed CLEAN {RelayedOutbound}, ORIGINATING LOCAL [127.0.0.1] <[email protected]> -> <[email protected]>,<[email protected]>, Message-ID: <[email protected]>, mail_id: V98Oi0SXMC7W, Hits: -0.989, size: 15774, queued_as: 5FDBD41C9C, 3011 ms Jun 1 21:58:17 cp postfix/lmtp[4861]: 514CA3FF93: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10026, delay=3.1, delays=0.07/0.01/0/3, 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 5FDBD41C9C) Jun 1 21:58:17 cp postfix/lmtp[4861]: 514CA3FF93: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10026, delay=3.1, delays=0.07/0.01/0/3, 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 5FDBD41C9C) Jun 1 21:58:17 cp postfix/qmgr[1763]: 514CA3FF93: removed Jun 1 21:58:17 cp postfix/smtp[4874]: connect to gmail-smtp-in.l.google.com[2404:6800:4003:c00::1a]:25: Network is unreachable
i think i am not using ipv6, where can i check Edited As i see ipv6 is enabled but no ipv6 is assigned, only ipv4 is assigned
Code: connect to gmail-smtp-in.l.google.com[2404:6800:4003:c00::1a]:25: Network is unreachable That shows your system connects to gmail using IPv6. If it is not configured this connection fails. Either set up IPv6 routing or make your postfix stop using IPv6. Internet Search Engines with Code: site:howtoforge.com disable IPv6 find promising articles.
Change postfix config file "/etc/postfix/main.cf" to "inet_protocols = ipv4" and restarted postfix. still emails are not delivering. Code: root@cp:/var/log# tail mail.log Jun 1 23:48:55 cp postfix/lmtp[11743]: BBA553FF93: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10026, delay=0.62, delays=0.06/0.01/0/0.55, 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 5B0FE41CA7) Jun 1 23:48:55 cp postfix/qmgr[11055]: BBA553FF93: removed Jun 1 23:48:55 cp dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=11753, secured, session=<dxr+X7jD0qh/AAAB> Jun 1 23:48:55 cp dovecot: imap([email protected]): Logged out in=70 out=706 Jun 1 23:48:55 cp dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=11756, secured, session=<fb8AYLjD1Kh/AAAB> Jun 1 23:48:55 cp dovecot: imap([email protected]): Logged out in=317 out=5440 Jun 1 23:48:55 cp dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=11758, secured, session=<r9ABYLjD1qh/AAAB> Jun 1 23:48:55 cp dovecot: imap([email protected]): Logged out in=119 out=766 Jun 1 23:48:56 cp postfix/smtp[11702]: connect to alt1.gmail-smtp-in.l.google.com[173.194.202.26]:25: Connection timed out Jun 1 23:48:56 cp postfix/smtp[11703]: connect to mx2.zoho.in[103.89.74.165]:25: Connection timed out Code: root@cp:/var/log# tail mail.log Jun 1 23:49:25 cp postfix/smtp[11749]: connect to gmail-smtp-in.l.google.com[74.125.200.27]:25: Connection timed out Jun 1 23:49:25 cp postfix/smtp[11750]: connect to mx.zoho.in[103.89.74.165]:25: Connection timed out Jun 1 23:49:26 cp postfix/smtp[11702]: connect to alt2.gmail-smtp-in.l.google.com[142.250.115.26]:25: Connection timed out Jun 1 23:49:26 cp postfix/smtp[11703]: connect to mx3.zoho.in[103.89.74.165]:25: Connection timed out Jun 1 23:49:26 cp postfix/smtp[11703]: 9CC0E41CA2: to=<[email protected]>, relay=none, delay=622, delays=532/0.02/90/0, dsn=4.4.1, status=deferred (connect to mx3.zoho.in[103.89.74.165]:25: Connection timed out) Jun 1 23:49:55 cp postfix/smtp[11750]: connect to mx2.zoho.in[103.89.74.165]:25: Connection timed out Jun 1 23:49:55 cp postfix/smtp[11749]: connect to alt1.gmail-smtp-in.l.google.com[173.194.202.26]:25: Connection timed out Jun 1 23:49:56 cp postfix/smtp[11702]: connect to alt3.gmail-smtp-in.l.google.com[64.233.171.26]:25: Connection timed out Jun 1 23:49:56 cp dovecot: imap-login: Login: user=<[email protected]>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=11785, secured, session=<Cu+jY7jDRKl/AAAB> Jun 1 23:49:56 cp dovecot: imap([email protected]): Logged out in=197 out=1820 i added 2 mails, one is google and the other is zoho.
Probably port 25 connections are blocked. Check with your vps/colocation host and each router/connection along the path to the larger internet till you find the problem (it will be close to your endpoint, not many hops away).
Code: ufw status Status: inactive At cloud level, below ports are opened. Code: 20,21,22,25,53,80,110,143,443,3306,8080,10000,40110-40210
My e-mail tutorial, link in signature below, has info on ports needed on an e-mail server. https://www.howtoforge.com/how-to-install-an-email-server-with-ispconfig-on-debian-10/#open-ports The comments of that tutorial have entry that tells how to test port is open.
