Sep 11 02:21:44 SERVERSDNSUMBERSARI3 dovecot: imap(sekolah@sdnsumbersari3.sch.id): Logged out in=44 out=612
Sep 11 02:22:23 SERVERSDNSUMBERSARI3 postfix/smtpd[32725]: warning: No server certs available. TLS won't be enabled
Sep 11 02:22:23 SERVERSDNSUMBERSARI3 postfix/smtpd[32725]: connect from localhost[::1]
Sep 11 02:22:23 SERVERSDNSUMBERSARI3 postfix/smtpd[32725]: 199151C8AD5F: client=localhost[::1], sasl_method=LOGIN, sasl_username=sekolah@sdnsumbersari3.sch.id
Sep 11 02:22:23 SERVERSDNSUMBERSARI3 postfix/cleanup[32728]: 199151C8AD5F: message-id=<efbe11ae971d73781f891fadcf3c75c3@sdnsumbersari3.sch.id>
Sep 11 02:22:26 SERVERSDNSUMBERSARI3 postfix/qmgr[32540]: 199151C8AD5F: from=<sekolah@sdnsumbersari3.sch.id>, size=615, nrcpt=2 (queue active)
Sep 11 02:22:26 SERVERSDNSUMBERSARI3 postfix/smtpd[32725]: disconnect from localhost[::1] ehlo=1 auth=1 mail=1 rcpt=2 data=1 quit=1 commands=7
Sep 11 02:22:26 SERVERSDNSUMBERSARI3 dovecot: imap-login: Login: user=<sekolah@sdnsumbersari3.sch.id>, method=PLAIN, rip=::1, lip=::1, mpid=32735, secured, session=<VDY+c13o7rgAAAAAAAAAAAAAAAAAAAAB>
Sep 11 02:22:27 SERVERSDNSUMBERSARI3 dovecot: imap(sekolah@sdnsumbersari3.sch.id): Logged out in=491 out=687
Sep 11 02:22:28 SERVERSDNSUMBERSARI3 dovecot: imap-login: Login: user=<sekolah@sdnsumbersari3.sch.id>, method=PLAIN, rip=::1, lip=::1, mpid=32742, secured, session=<y/tUc13o9LgAAAAAAAAAAAAAAAAAAAAB>
Sep 11 02:22:28 SERVERSDNSUMBERSARI3 dovecot: imap(sekolah@sdnsumbersari3.sch.id): Logged out in=44 out=612
Sep 11 02:22:28 SERVERSDNSUMBERSARI3 dovecot: imap-login: Login: user=<sekolah@sdnsumbersari3.sch.id>, method=PLAIN, rip=::1, lip=::1, mpid=32745, secured, session=<HXRhc13o9rgAAAAAAAAAAAAAAAAAAAAB>
Sep 11 02:22:28 SERVERSDNSUMBERSARI3 dovecot: imap(sekolah@sdnsumbersari3.sch.id): Logged out in=120 out=786
Sep 11 02:22:28 SERVERSDNSUMBERSARI3 dovecot: imap-login: Login: user=<sekolah@sdnsumbersari3.sch.id>, method=PLAIN, rip=::1, lip=::1, mpid=32746, secured, session=<orhhc13o+LgAAAAAAAAAAAAAAAAAAAAB>
Sep 11 02:22:29 SERVERSDNSUMBERSARI3 dovecot: imap(sekolah@sdnsumbersari3.sch.id): Logged out in=50 out=525
Sep 11 02:22:57 SERVERSDNSUMBERSARI3 postfix/smtp[32738]: connect to mta6.am0.yahoodns.net[98.136.96.76]:25: Connection timed out
Sep 11 02:22:57 SERVERSDNSUMBERSARI3 postfix/smtp[32733]: connect to gmail-smtp-in.l.google.com[172.217.194.27]:25: Connection timed out
Sep 11 02:22:57 SERVERSDNSUMBERSARI3 postfix/smtp[32733]: connect to gmail-smtp-in.l.google.com[2404:6800:4003:c04::1a]:25: Network is unreachable
Sep 11 02:23:27 SERVERSDNSUMBERSARI3 postfix/smtp[32738]: connect to mta6.am0.yahoodns.net[98.136.96.77]:25: Connection timed out
Sep 11 02:23:27 SERVERSDNSUMBERSARI3 postfix/smtp[32733]: connect to alt1.gmail-smtp-in.l.google.com[173.194.202.26]:25: Connection timed out
Sep 11 02:23:27 SERVERSDNSUMBERSARI3 postfix/smtp[32733]: connect to alt1.gmail-smtp-in.l.google.com[2607:f8b0:400e:c00::1a]:25: Network is unreachable
Sep 11 02:23:29 SERVERSDNSUMBERSARI3 dovecot: imap-login: Login: user=<sekolah@sdnsumbersari3.sch.id>, method=PLAIN, rip=::1, lip=::1, mpid=334, secured, session=<r20Bd13oHLkAAAAAAAAAAAAAAAAAAAAB>
Sep 11 02:23:29 SERVERSDNSUMBERSARI3 dovecot: imap(sekolah@sdnsumbersari3.sch.id): Logged out in=50 out=525
Sep 11 02:23:57 SERVERSDNSUMBERSARI3 postfix/smtp[32738]: connect to mta5.am0.yahoodns.net[98.136.96.77]:25: Connection timed out
Sep 11 02:23:57 SERVERSDNSUMBERSARI3 postfix/smtp[32733]: connect to alt2.gmail-smtp-in.l.google.com[142.250.141.26]:25: Connection timed out
Sep 11 02:23:57 SERVERSDNSUMBERSARI3 postfix/smtp[32733]: 199151C8AD5F: to=<dhana.nesia@gmail.com>, relay=none, delay=94, delays=3.5/0.28/90/0, dsn=4.4.1, status=deferred (connect to alt2.gmail-smtp-in.l.google.com[142.250.141.26]:25: Connection timed out)
Sep 11 02:24:27 SERVERSDNSUMBERSARI3 postfix/smtp[32738]: connect to mta6.am0.yahoodns.net[67.195.204.74]:25: Connection timed out
Sep 11 02:24:29 SERVERSDNSUMBERSARI3 dovecot: imap-login: Login: user=<sekolah@sdnsumbersari3.sch.id>, method=PLAIN, rip=::1, lip=::1, mpid=392, secured, session=<I+KWel3oQLkAAAAAAAAAAAAAAAAAAAAB>
Sep 11 02:24:30 SERVERSDNSUMBERSARI3 dovecot: imap(sekolah@sdnsumbersari3.sch.id): Logged out in=50 out=525
Sep 11 02:24:57 SERVERSDNSUMBERSARI3 postfix/smtp[32738]: connect to mta7.am0.yahoodns.net[67.195.228.109]:25: Connection timed out
Sep 11 02:24:57 SERVERSDNSUMBERSARI3 postfix/smtp[32738]: 199151C8AD5F: to=<rifky_yudha_p@yahoo.com>, relay=none, delay=154, delays=3.5/0.3/150/0, dsn=4.4.1, status=deferred (connect to mta7.am0.yahoodns.net[67.195.228.109]:25: Connection timed out)
Sep 11 02:25:29 SERVERSDNSUMBERSARI3 dovecot: imap-login: Login: user=<sekolah@sdnsumbersari3.sch.id>, method=PLAIN, rip=::1, lip=::1, mpid=446, secured, session=<qrQofl3oYrkAAAAAAAAAAAAAAAAAAAAB>
Sep 11 02:25:29 SERVERSDNSUMBERSARI3 dovecot: imap(sekolah@sdnsumbersari3.sch.id): Logged out in=50 out=525

how can i fix this?
on past... i just add mailserver... and activate the related php extension....
any solution for this? i had no idea how to fix this... any email that i sent to for the test... fail to reach the destination.... and the log shown like that....

    jonhcarter when i try to install it.... they shown nothing... i mean...

    and then

    after this loading... nothing happen.... do you had the solution?
    also... if i using cloudflare... the problem still the same... nothing added to the ssl....
    they didn't installed... but the popup for application certificate appear.... but after dissapear... nothing added on ssl....

      Change Cloudflare SSL settings to Flexible & then generate the SSL with the first option file method. for the DNS method, you need to disable the Cloudflare proxy first in Cloudflare DNS settings.

        jonhcarter yeah same...
        Cloudflare "Your SSL/TLS encryption mode is Flexible"
        and proxy status... dns only,,,,

        then i create ssl with manual resolution and cloudflare...
        it's ended same... after loading... nothing happen on my side... they just dissapear....
        no ssl added or else....

        any other solution?

          • Just for note... All port open (say the tech support of my vps)

          i hope i can get mail server working.... on past... i already use it and it's works everytime.... just now i had this problem

          Look like you SSL running well now. Does your web and mail service using different server?
          You may WA me if need help, I'm at Jakarta, Kota Komputer 082111978168 😀

            aaP_kotakomputer.ceo i mean... so i just copy and paste the ssl from web to the mailserver?
            login roundcube is on mail subdomain
            and the ssl i just paste it from parent domain?

            because the issue is the ssl doesn't even added after loading

              Now i get
              " The IP address sending this message does not have a 550-5.7.25 PTR record setup" error

              the way i can fix the error on original post is port "25" filtered (the vps company) said it's open... but it's filtered when i tested with nmap it's said "filtered" so the vps company fix it and now it's solved....

              but now... the new problem is, any email that i sent... never arrive... for gmail user
              it says

              bounced (host gmail-smtp-in.l.google.com[142.251.12.27] said: 550-5.7.25 [103.187.146.233] The IP address sending this message does not have a 550-5.7.25 PTR record setup, or the corresponding forward DNS entry does not 550-5.7.25 point to the sending IP. As a policy, Gmail does not accept messages 550-5.7.25 from IPs with missing PTR records. Please visit 550-5.7.25 https://support.google.com/mail/answer/81126#ip-practices for more 550 5.7.25 information. p18-20020a63f452000000b0042b29871d8asi9632636pgk.247 - gsmtp (in reply to end of DATA command))

              any solution for this?

                Dhanamerdeka
                Hello, find a server provider or network provider to make a PTR record for your ip.
                What is your system like? debian11 has not yet adapted to the mail server

                    Solution for all this is....

                    • Check port 25 (on my case, the port is opened but by vps operator it's open as "filtered") so we need to fully open it....
                    • add PTR records....
                      it will goes like this.. PTR
                      Name domain.com (with A to the ip example 1.2.3.4)
                      Content 4.3.2.1.in-addr.arpa
                      TTL Auto

                    i hope someone that had similar problem should fixed with my solution

                    2 years later

                    I`m using Contabo hosting.
                    The support team asked me to add the PTR record from my control panel.
                    I have two fields In the Reverse DNS management
                    IP ADDRESS ( my server IP address )
                    PTR RECORD: mydomain.com ( my real domain )

                    But, sometimes I get PTR error from Gmail.

                    I must say, my DNS management is with Cloudflare.
                    Do I need to add PTR to my Cloudflare DNS records?

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