What is the issue?

Error Message:

Reason: !onp.email.notificationDocDelivery.deliveryFailed.code.498!

Error Screenshot

 

Cause:

The error is always DNS-specific. For this example, the domain gmbh.salzburg.at does not have any MX records assigned; it's a non-existent domain. When a domain lacks MX records, email servers do not know where to send emails to for that domain.

Check this:

How to check the MX Record?

You can check the MX record online using website: https://mxtoolbox.com/

MX Loop-up result will be like:

Resolution:

What should the document sender do for Error code:498

• Please contact your document receiver and share the above details so that they can fix this problem.