One of our users is getting bounce back emails from one email address.
"Diagnostic information for administrators:
Generating server: MI01EXCH001.miomni.com
barracuda.mhllp.co.uk #554 IP name lookup failed. No PTR record found. ##"
After using DNSStuff toolbox, it says I have a problem with reverse DNS from the MX records.
As we manage the DNS internally, could someone tell me what I need to update in DNS?