Hello, I have several size limitations for messages in place (in 'Global settings' for Message delivery in the whole organisation, at the Internet Mail Connector) to prevent huge messages both internally and externally. Although these limits are used, the server can still be brought to its knees by sending huge messages. The current limit is 10MB, but submitting a message with a 500MB attachment (Yes, we actually have users who tried this. Worse: They had no clue that was 'not done') brought the server to a halt. Similar messages but smaller in size (for example 75MB) kept the server really busy and many users were disconnected but were eventually returned (you get a NDR with again the original 75MB message inside :-( But there is a KB Article that explains how to strip/cut-off large messages.) Is there a way to prevent these huge messages from being accepted and processed by the server? The current limits are in place, but don't prevent the server from processing anyway. I'm thinking of something that would just disconnect the submit when a certain amount of data has been reached, or better, check size before processing. The clients mostly use Outlook/MAPI to connect. Regards, Michel Erdmann
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