The integration of the CPM system with the corporate mailbox is periodically disrupted.

It should also be noted that such letters do not arrive continuously, but periodically. And in the "Mail" application, an error sometimes occurs, but over time it returns to normal.

Good day. The message shows why mail is not working. Remove the restrictions on the number of connections on the mail server and everything will work normally. Now, as far as I understand, we connect several times to read mail, then we are banned and then after a couple of hours they automatically unban us, after which we can work normally with imap for several minutes/hours.

Please tell me where I can do this? Somewhere in Google Workspace? Or do I have to do this in the CPM system?

On the server where you have this mail. This is not Gmail mail as far as I can see, perhaps some corporate mail that you host yourself?

We have this email connected through Google Workspace, it's one of the accounts in our Google Workspace. And on ukraine.com.ua in the "Mail" section it says - Mail from the domain goncharenkocentre.com.ua is forwarded to third-party mail servers.

This probably means that Google Workspace simply reads this mail from a third-party service, just like we do, and it is actually hosted somewhere else?

Most likely, it is tied to our site, through this ukraine.com.ua, and is managed through https://adm.tools/, but it is unclear where these limits can be viewed or changed. I will try to ask the technical support of these platforms.

They responded as follows:
"Your domain has an MX record from Google. I understand your mail is added to Google workspace (G Suit). Since MX from Google is used, you need to use IMAP data provided by Google. There is nothing we can do here, you need to check the information in Google or look in the settings in Google workspace."
Do you know where in Google Workspace you can view or change these settings?

Here is the instruction I found on the Internet
1. Enabling IMAP in Gmail
To use IMAP, it must be enabled in the user's Gmail settings:
Sign in to Gmail with your Google Workspace account.
Click the ⚙️ (Settings) icon in the top right corner.
Select All settings.
Go to the Forwarding and POP/IMAP tab.
In the IMAP access section, select Enable IMAP.
Click Save Changes.
2. Retrieving IMAP data
Use the following IMAP settings to connect email clients:
IMAP server: imap.gmail.com
Port: 993
Encryption method: SSL/TLS
SMTP server: smtp.gmail.com
Port: 465 (SSL) or 587 (TLS)
Encryption method: SSL/TLS
Login: The full email address of your account.
Password: Account password or app-specific password (if 2FA is enabled).
3. Settings in Google Admin Console (for Workspace administrators)
If IMAP is blocked by your administrator, you need to change the settings in the Google Admin Console:
Go to the Google Admin Console.
Log in with an administrator account.
Go to Apps → Google Workspace → Gmail → User settings.
In the IMAP access section, verify that IMAP is enabled for your domain.
If necessary, make changes and save them.

Please tell me if CRM supports TLS 1.2 or higher? We asked Google about this.

Thanks for your answers. I consulted with Google, they changed some settings in our Google Workspace. Maybe it will help