SMTP Error Code: 354 2.1.5

what's your mail server saying?

Lookup for "354 2.1.5"

This status code indicates a successful delivery or other operation. Any details are simply notes.

Basic Status Code Details (354)

Start mail input; end with .

Enhanced Status Code Details (2.1.5)

Destination address valid

This mailbox address as specified was valid. This status code should be used for positive delivery reports.