I am using exchange server 2010. I am not getting more than 2 MB attachment from out side. Internally it is working fine but externally it is not working. I have allowed 10 MB mail size on receive connector. I think 10 MB is default size.
I have spoken with logix team for the same, they are saying message is reaching to exchange server. General mail flow is working fine but if you attach 5 MB attachment. then it is not coming in side my organization,