Why does my iPhone or iPad tell me the server “does not allow relaying”?

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If you’re using an iOS device like an iPhone, iPad, or iPod Touch, and you see an error message saying an outgoing message “was rejected by the server because it does not allow relaying”, or if you have trouble sending mail but not reading it, this means that your device isn’t sending the correct mail username or password with outgoing mail.

You can fix this in your device settings:

1. Go to the settings screen.

From the iPhone, iPad, or iPod touch main screen, tap:

  • Settings
  • Mail (for iOS 10) or Mail, Contacts, Calendars (for iOS 9 and previous versions)
  • (your email address)

Then tap address@example.com next to “Account”:

Tap Account

2. Verify the “Outgoing Mail Server” settings.

Scroll down the page to the “Outgoing Mail Server” section and tap SMTP, then tap the settings for the primary server (which is most likely marked “mail.tigertech.net”).

Keep in mind that iOS devices have separate sections for incoming and outgoing mail; make sure you’re looking at the settings marked “OUTGOING MAIL SERVER”, not at the “INCOMING MAIL SERVER” settings.

The settings should look like the picture below.

Important: Even though “User Name” and “Password” initially say “optional”, they are not optional if you want to send outgoing mail from this address on this device. Be sure to enter your full email address as the user name, as well as your email password.
iPhone outgoing mail server settings

In particular, make sure the following “Outgoing Mail Server” settings are correct:

  • Host Name: mail.tigertech.net
  • User Name: your email address (all lowercase)
  • Password: your email password
  • Authentication: Password
  • Server Port: 587

Click the Done button in the top right when you’ve finished making changes.