How To Fix “Cannot Verify Server Identity” On iPhone

Here How To Fix Cannot Verify Server Identity Error On iPhone

You are trying to send an email but you are getting pop up message “cannot verify server identity” on iPhone and due to this you get failed to send an email. In this tutorial, I will discuss some effective solutions on how to fix “cannot verify server identity” on iPhone.

What Is “Cannot Verify Server Identity” Error On iPhone?

When an iPhone securely tries to connect to mail server then it brings the server’s “SSL Certificate” and see if it is trustworthy.

If it finds the certificate expired, or not signed by a popular company, or the domain name is not same, it will mark the cert as unreliable.

At this point, the secure connection get fails and your iPhone will send the error message “Cannot verify server identity”.

This error pops up when you are using any mail servers. It sometimes appears with famous mail servers such as,, etc.

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Let’s us look at a real user practical scenario.

Practical Scenario: An iPhone 7 Users Is Asking Solution To Fix “Cannot Verify Server Identity” Error

iPhone cannot verify server identity

Today whenever I enter my e-mail on iOS 10, iPhone 7 a message pops up with ‘cannot verify server identity’…previosly this gave you the option to continue, details or cancel…now on iOS 10 the continue option has been dropped so I cannot simply click and get my e-mails…does anyone know how to fix? I have searched online with no joy as all are much older versions of iOS. or based on safari issues.

Source: Apple Support Community

There are many other iPhone users who is going through this error and they wish to know why they are getting this error. So, let’s know it first.

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Why You Are Receiving Error “Cannot Verify Server Identity” On iPhone?

To understand the reason of this error, you need to know about SSL certificates. It is a code that help to verify ownership of websites. SSL also checks whether the company is trustworthy or not.

Generally, the error “cannot verify server identity” occurs on iPhone due to untrusted server.

Commonly, this error occurs after settings up a new email account. Each time you add a new email account, SSL verification takes place.

However, this error also occurs due to following reasons.

  • Sometimes wrong email settings can cause this error.
  • If there is bugs or glitches on your iPhone.
  • A Mismatch Between Domain Name And Server Name.

Most of the hosting companies give the mail server name as “”. However, the certificate of the mail server will be in the format “”.

When forming, iPhone users put in their mail server as “”, but when the iPhone brings the certificate then it view the name “” printed in it.

iPhone plays safe and marks the certificate as untrustworthy.

To tackle this problem you need to follow the below discussed solutions.

So, let’s learn the solutions to fix “cannot verify server identity” On iPhone.

Note: All the solutions that I am going to discuss below will be applicable for all iPhone models including iPhone 14/13/12/11/X/XR/XS/XS Max/8/7/6 and so on.

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Solution 1: Restart Your iPhone

Restating your iPhone will help to fix minor issues on email app due to which you are getting this error. So, simply restart your iPhone and then see if the issue is solved or not.

Solution 2: Close And Reopen Mail App

When any app doesn’t work properly then you should simply close the app and reopen it. Doing this sometimes solve the problem. Maybe this can also work for Mail app.

To close the Mail app, you need to double click the Home button. Doing this, will open the App Switcher. Now, swipe up the Mail app using your finger to close it.

Now, go back to Home screen and open the Mail app again and check you are able to send mail or not.

Solution 3: Update Your iPhone

If closing and reopening the Mail app didn’t fix the problem then you should look update for your iPhone. Updating the iPhone will fix the bugs or glitches on the device which will help to fix the issue.

Below, follow the steps to update your iPhone.

Step 1: On your iPhone, open the Settings app.

Step 2: After this, hit on General.

Step 3: Then tap on Software Update.

Update iOS On iPhone

Step 4: If the update is available then follow the on screen steps to download and install the latest version of OS update for your iPhone.

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Solution 4: Remove Your Email Account And Add It Again

Removing and reading the email account will reset the email’s server identity certificates that let your email account to verified by the Mail app. Don’t Panic! This will not delete any data from your iPhone.

Now, follow the below steps to remove email account on iPhone.

Step 1: Run Settings app on your iPhone.

Step 2: Then tap on Mail > Accounts.

Step 3: After this tap on the email account that you wish to delete.

Step 4: Tap on Delete button in red and confirm it in the pop-up message.

Once you delete the email account, add it again by following the below steps.

Step 1: Navigate to Settings > Mail.

Step 2: Choose Account > Add account.

Step 3: Now, select your email service provider.

Step 4: Then, follow the on screen steps to read your email account details.

If you use other email accounts then you should remove all email accounts on your iPhone.

Solution 5: Update iOS Carrier Setting

If there is a conflict in the network settings then it can also cause problem with the email syncing. So to tackle this problem, you need to update the iOS carrier setting. This will help to solve any issues that is related to the network.

To update carrier settings, go to Settings > General > About and then scroll to Carrier section. After this, you need to follow the on screen steps to update the carrier setting.

Note: You will automatically get the carrier update when you tap on About. This feature has lanuched in iOS 14.3.

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Solution 6: Check If Domain And Server Name Is Mismatched

If the error is occurring due to mismatched in domain or sever name then you need to follow these tips to fix the issue.

  • If the hosting customer has a VPS account then you can change the mail server name to match the certificate name.
  • If the hosting user is a Shared Hosting customer then they can change iPhone’s mail server settings to use “” instead of “”.
  • Those VPS users who use invalid certificate (For example – self-signed certs are untrusted), you can get setup certificates from Let’s Encrypt, which is a valid CA that offers free SSLs.

Solution 7: Reset All Settings

You can also reset all settings of your iPhone in order to fix “cannot verify identity” error on Email app. But remember that this will delete all your device settings to default.

Below follow the steps to reset all setting on iPhone to stop cannot verify server identity error.

Step 1: Go to Settings > General > Reset.

Step 2: After this, tap on Reset All Settings.

Reset All Settings On iPhone

Step 3: If you have set Restriction password or password then you will be asked to enter them. Simply enter then.

Step 4: Next, confirm the process by tapping on Reset All Settings.

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Solution 8: Factory Reset Your iPhone

If still you are getting error “cannot verify server identity” on iPhone then you should factory reset your iPhone to default settings. Before you move to the steps to factory reset, you must backup your iPhone. Because this will erase all your device’s data.

Now, follow the below steps to factory reset your iPhone.

Step 1: On your iPhone, run the Settings app.

Step 2: Then choose General.

Step 3: Now, hit on Transfer or Reset iPhone.

Step 4: Next, tap on Erase all content and settings.

Erase All Content and Settings On iPhone

Step 5: If asked, enter your device passcode.

Step 6: Now, follow the on screen to reset your iPhone.

It is vital to set up an iPhone as new. If you don’t do then the earlier settings will be retained which could cause the error. While you are setting up your email, make sure the details and other settings are correct.

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Solution 9: Contact Email Service Provider And Apple Support

If the above solutions didn’t fix the error then it may be possible that it is causing due to problem with your email service provider. Maybe the email server may be having some technical issues and it is under maintenance.

In this situation, you can contact your email service provider to check the current status of the email server.

You can also contact your carrier provider/service provider to check and re-configure the SMTP settings or outgoing and incoming server on your iPhone.

Alternatively, you can report the issue to Apple support so that they can take some steps to find whether or not the issue is with the Apple servers.

Bonus Tip: Change SSL Settings

One bonus tip that you have to apply to fix this error is to disable SSL settings. Many users have reported that this method has helped them to fix the issue.

Below, learn how to do this.

Step 1: Open Settings and the tap on Passwords & Accounts.

Step 2: After this, tap on Mail app that is causing the issue.

Step 3: Then, choose the registered Account.

Step 4: Now, go to Advanced settings and turn off Use SSL feature.

Note: Remember that sending emails through non-secure ways can risk your data.

Bottom Line

Hopefully, the solutions that I have mentioned above will help you to fix “cannot verify server identity” error on iPhone. Along with solutions I have also mentioned what “cannot verify server identity” means and why this error occurs.