System.Net.Mail.SmtpException: Insufficient system storage. The server response was: 4.3.1 Insufficient system resources

Question

I\'ve recently designed a program in C# that will pull information from SQL databases, write an HTML page with the results, and auto-email it out. I\'ve got everything worki

Answer 1

This error can happen when:

1. The exchange server is out of disk space.
2. The recipient mailbox is out of disk space.

It is more common to run into issue #2 than issue #1.

Here is a list of Exchange Status Codes and their meanings.