Why won't my iPhone 6 send mail because of not relaying?

Hello, DVous.

Thank you for visiting Apple Support Communities.

I understand that you are experiencing and issue sending mail and receiving an error in regard to relaying. Here are the troubleshooting steps that I would go through for this specific error.

"Relaying denied" or "Email address rejected by the server" when you try to send email

This error indicates that either an email address is incorrect or your settings aren't correct for your current connection. Make sure the email address is correct for messages in the Outbox or try a different port:

If you're on a Wi-Fi network connected to the same network as your email domain, such as your Cable or DSL provider, try port 25:

1. Tap Settings > Mail, Contacts, Calendars.
2. Tap your email account, then tap Account.
3. Scroll down and tap Outgoing Mail Server.
4. Tap Primary Server, then tap Server Port.
5. Delete the current port and enter 25.
6. Tap Done.

When you connect to a cellular data or a different Wi-Fi network, you need to use an alternate port and authentication, if your email provider supports it. The most common alternate ports are 465 and 587. Check with your email provider for specific settings.

If you still can't send email, you can set up an alternate SMTP server.

Get help with Mail on iPhone, iPad, and iPod touch

Cheers,

Jason H.