Gmail POP3 POP Server issues.

Support and Discussion DNS Server
1

Hello Team,

Question 1:

My Admin account is abc.com, and my Client account is xyz.com

I want my Client account to use the POP Server → xyz.com (Port 995), but not successful, Gmail will be warning me below message

Unable to establish secure SSL connection to xyz.com[ Help ]
Server returned error: “SSL error: ok Hostname “xyz.com” doesn’t match any SANs: “abc.com”, “www.abc.com””

And I also tried to use non-SSL (Port 110), Gmail is also warning me

There was a problem while connecting to xyz.com
Server returned error: “SSL protocol error. Please try disabling SSL, or contact your other provider to verify the correct port settings.”

May I know can I use my Client account (xyz.com) as the POP Server in Gmail?

Question 2:

Also, I found and tried that I must need to enable the CSF to use the Gmail POP3 function, if I disable CSF and use CyberPanel Firewall, the Google will not pass it. ?

Many thanks =)

2

This guide will help you set up email on Gmail

Especially at the end, you will find the information you need but recommended to read full tutorial.

3

Hello, Nice to meet you!

I followed your provided teaching and my current rDNS entry (IP address) is pointed to my Admin account (abc.com).

But my current Client account (xyz.com) to use the POP Server → xyz.com (Port 995), is also not successful, Gmail will be also warning me below message

Unable to establish secure SSL connection to xyz.com[ Help ]
Server returned error: “SSL error: ok Hostname “xyz.com” doesn’t match any SANs: “abc.com”, “www.abc.com””

May I know is it not possible to use xyz.com as the POP Server?
Or Can I disable the SSL, to let the Client to use non-SSL (Port 110)?

Thanks for your support again! =)

4

When you configure POP on Gmail you can use abc.com as a POP server, before using this domain make sure to issue SSL for it https://cyberpanel.net/docs/2-ssl-for-postfix-dovecot/

You can use abc.com to configure xyz.com too. So while adding email from xyz.com use abc.com for the POP server along with port 995

5

Understood, thank you so much for your support =)

6

Hi, i have problem with Gmail .
My hostname (hostanme -f) : mail.domain.com
my mail : [email protected]
DNS MX : mail.domain.com

i have 10/10 on mail-tester.com
I create Let’s Encrypt SSL for MailServer (Postfix / Dovecot)

now in gmail :
POP mail.domain.com port 110 no SSL = „[AUTH] Plaintext authentication disallowed on non-secure (SSL/TLS) connections.”

POP mail.domain.com port 110 with SSL = „SSL protocol error. Please try disabling SSL, or contact your other provider to verify the correct port settings.”

POP mail.domain.com port 995 no SSL = “No route to host”

POP mail.domain.com port 993 with SSL = „SSL error: ok Hostname “mail.domain.com” doesn’t match any SANs: “domain.com”

POP domain.com port 993 with SSL = „Missing +OK response upon connecting to the server: * OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN] Dovecot ready.”

POP domain.com port 993 no SSL = „Connection timed out: There may be a problem with the settings you added. Please contact your other email provider to verify the correct server name and port.”

in Achieve 10/10 Email score with CyberPanel! - Blog Posts - CyberPanel Community
i found info : “Choose port 995.”
BUT only 25, 587, 465, 110, 143 and 993 is open on firewall .

What should i do ?
Change hostname to domain.com?
Open 995 port?

help me please.

7

Same here.

Can’t understand HOW to connect via POP and SMTP trough SSL.

Docs are missing. Any help from Cyberpanel creators?

8

Use the following to add SSL for all mail domain and fix auto-discover too