We have Exchange server 2007. Recently the sending email size limit has been set to 5MB. The receiving email size is unlimited. Since then, we have issues receiving emails with large attachments (more than 5 MB). Some of the emails are received by the server (shown in message tracking), others are not. The emails received are not delivered to user mailboxes though. Specific user mailboxes are set for higher receiving email size limit (20MB), but still have the same issue.
Can someone please help with this problem?