Solved:Email address Rejected by the server on iPhone,iPad: Cannot Send Mail

On your iPhone, iPad and iPod touch Mail app giving the particular error with the title: Email address Rejected by the server on iPhone or Relaying denied. Then you must have to follow the below-setting guide possibilities. First, you have to correct email address although Second follow the below steps. Getting rejected by server error or relaying denied error.

Compatible device: works on iPhone 8, iPhone 8 Plus, iPhone X, iPhone 4/4S, iPhone 5/5S/5C, and iPhone 6 and iPhone 6 plus, iPad and iPod touch 2nd generation, 3rd generation, and 5th generation.

Error cause invalid port used to send mail from your iOS device. So you can change or update port setting with below simple steps, don’t need any technical knowledge and expert suggestions.

Updated on (29-Sep-2017) and Fixed

iOS 11 reported biggest bug and issues on sending email from outlook using email app on iPhone, iPad. And receiving message “Cannot Send Mail. The message was rejected by the server.” That means you couldn’t send email to Microsoft Mail Services hosted by Microsoft:, Office 365, and Microsoft Exchange.

That Now fix in new with iOS 11.0.1 update.

Get: how to update to iOS 11 latest versions on iPhone

Useful tips:

Steps to solve Email address Rejected by the server on iPhone or Relaying denied on iOS device

Steps For iOS 11 or Later

Go to the Settings app on iPhone, iPad > Accounts & Password > Add Account under Accounts > Use Other for Custome Mail Server setup otherwise, use Supported Mail Services, Tap on in and Login with your Existing Mail ID and Password.

Detailed Guide: Add email Account on iPhone.

Steps For iOS 10 or Earlier

Step 1: Go to the Settings app from iPhone, iPad or iPod touch

Step 2: Next, Tap on Mail, Contacts, Calendars.

Step 3: Tap on Email account (Already registered or logged in)

Step 4: Move down the screen, and tap on the Outgoing mail server.

Step 5: Now you have to go with Primary Server option.

Step 6: Next, Click on Server port option.

Step 7: Delete/ Remove current port and re enter port number 25.

Step 8: Save setting by a tap on “Done.”

After that you should solve this error, Still are you facing the same problem? Then enter valid SMTP details.

Note: SMTP details different for different Email service provider, So contact your Email service provider and get the correct hostname. (ex for GMAIL: and your username and password.

By Going to the Setting > Mail, Contacts, Calendars > Account > SMTP > Add Server and Save setting.Email address Rejected by the server on iPhone, iPad

Note: Port number also different on your Email service provider.

Hope you solved “Email address Rejected by the server on iPhone or Relaying denied ” or “Cannot Send Mail” problem to access your Mail from iPhone, iPad and iPod touch.

  • Jenny russell

    Hi have followed your instructions put in port 25 but iPad gets stuck verifying any ideas