So I have 3 clients all using Barracuda Spam Firewalls. This started 2 days ago with one client and now as of yesterday the other 2 started.
At first I thought it was an AOL issue and put in a ticket for them as it was only happening with AOL email addresses. Now it is more than that.
I was able to send emails from my gmail account to the email addresses just fine and the recipients responded so i know the emails are good. It happens with EVERY AOL address adn starting to happen with recipient with a barracuda now.
They are able to email me fine and other people just fine.
Below you will see a snip of the errors.
The following organization rejected your message: d73012a.ess.barracudanetworks.com
There's a problem with the recipient's mailbox. Please try resending this message. If the problem continues, please contact your helpdesk.
The following organization rejected your message: mailin-01.mx.aol.com.
mailin-01.mx.aol.com #<mailin-01.mx.aol.com #5.2.1 smtp; 521 5.2.1 : AOL will not accept delivery of this message.> #SMTP#