Error in Event Viewer everytime a email is sent with a attactmant

Question

Hi All,
I'm having a problem with my exchange server every time a email gets sent with a attachment under the size of 20MB it bounces back and when it bounces back I get this in the event viewer,
Cmdlet failed. Cmdlet Get-User, parameters {Identity=NT AUTHORITY\SYSTEM}.
I've checked all the setting and they are as they was set up in the first place nothing has changed.
Hope you get back soon
Regards
Matthew Carney
Regards Matthew Carney

Answer 1

Hi Belinda,
these are emails going outbound, this is the error we get when the email gets bounced back to us -
mx.google.com rejected your message to the following e-mail addresses:
*the email address*
mx.google.com gave this error: This message was blocked because its content presents a potential security issue. Please visit
http://support.google.com/mail/bin/answe r.py?answer=6590 to review our message content and attachment content guidelines. iy12si4764635wic.81 - gsmtp
Your message wasn't delivered because the recipient's e-mail provider rejected it.
Diagnostic information for administrators:
Generating server: ADMINSERVER.adminserv.local
mx.google.com #552-5.7.0 This message was blocked because its content presents a potential 552-5.7.0 security issue. Please visit
http://support.google.com/mail/bin/answe 552-5.7.0 r.py?answer=6590 to review our message content and attachment content 552 5.7.0 guidelines. iy12si4764635wic.81 - gsmtp ##
I am the network admin and the IT manager, this has confused me a bit because all the settings are as they were when I set it up and its only been like this that past month, the logs are full up with errors for this problem.
We can sent attachments internal fine and the fine i tried to sent in the email above was 15MB
Its not just google that we get bounced on its every email going outbound.
Regards Matthew Carney