"Cannot Verify Server Identity"

Hello Sagarpunia090,

We'd like to help with the error you're seeing on your iPhone.

This error may be occurring in the Mail app, does it seem to appear when you try to send an email?

Do you have any installed profiles or certificates? If so, try removing them: Install or remove configuration profiles on iPhone

This could determine if the profile is part of the error message.

We recommend restarting your device and keeping it updated as those steps assure you have cleared out any minor software issues and are running the most current version.

Restart your iPhone - Apple Support

Update your iPhone or iPad - Apple Support

If you still have questions, reach out to Apple Support directly, as this may require closer guidance: Get Support

Cheers!