Our company cannot receive E-mail from outside the organization with a 8 + MB attachment. Our Exchange server 2010 replies with a "#5.2.3 smtp;450 5.2.3 Msg Size greater than allowed by Remote Host".
As default under Organization Configuration - Hub Transport - Global Settings - Transport setting we have set both send and receive size to 20MB.
Yesterday I increased the Maximum message size to 15360 KB in Server configuration - Hub Transport - Receive connectors - our server.
Still almost 12 hours later the client cannot send us the E-mail with attachment.
Obviously I have missed something and hope someone can help shed some light on this.
Thanks in advance