Can't send email

Dhanamerdeka

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

Have you installed SSL for the mail server?

Dhanamerdeka

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....

jonhcarter

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.

Dhanamerdeka

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?

Dhanamerdeka

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

aaP_kotakomputer.ceo

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 😀

Dhanamerdeka

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

Dhanamerdeka

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?

aaPanel_Kern

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

Dhanamerdeka

aaPanel_Kern i use centos
so this need to be solved by the vps provider?

aaPanel_Kern

Dhanamerdeka
Required for PTR records.

Dhanamerdeka

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

aaP_esales2000

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?

aaPanel_Kern

Hello, PTR records generally need to be set up by the server provider or network provider.

aaP_esales2000

aaPanel_Kern
I`m using a VPS and they told me to use my VPS control panel to add a Reverse DNS record ( PTR ).

aaPanel_Kern

Yes, some vps can be set up in their management background

aaP_esales2000

aaPanel_Kern
What do I need to fill out in the PTR record field?
mydomain.com?

aaPanel_Kern

Domain name and IP

aaP_esales2000

aaPanel_Kern
That is what I did.
However, sometimes I receive a PTR error: