Barracuda “Error 500”

less than 1 minute read


User will send a request saying they are not receiving emails from one client. All other emails work fine (They can even send to that client).


To Resolve:

  1. Login to their computer.

  2. Have them login to their webmail and go to Settings – Options – Mail – Blacklist.

  3. More often than not, that persons email will be in there. How it gets there, I don’t know. Many claim it’s a glitch (Google it) but by removing it, the issue will be resolved.


“Whitelisted then Blacklisted?”