Smtp validating form
Please check with your Email Server Administrator / Provider to get the correct information for each setting.
up on your account you will need to create an App Password in order to verify the account and complete the setup.
You have our sympathy, this can be a difficult and time consuming task and you may not, in the end, get it to work. it ain’t the plugin that is causing your problems … Please try to keep that in mind as you work through some of the possible causes and solutions given below.
The release of Contact Form 7 version 4.4 introduced the Configuration Validator which validates Contact Form 7 form configurations to detect errors leading to mail delivery failure or other troubles.
If you spend some time in the CF7 support forum you will see a lot of posts from people who do have problems with sending our receiving emails from Contact Form 7.
This feature puts your email server in control of these emails and will be effective for all forms across your account.