Info on the Internet Mail Service

[slycer]

In regards to the IMS, what exactly is it for? The reason I am asking becasue of of my jobs had a limit of about 12MBand my new job doesnt, I have heard it is good to have a limit size, but I dont remember the reason. Can anyone help with this?

 

[Robnhood]

Not exactly sure what you are asking.

Craig

http://www.SecurelySpeaking.com

 

[slycer]

what I am asking bascially is the function of the Internet Mail Service the MS Exchange uses.

 

[dennisbbb]

IMS is similar to the SMTP service on a Windows 2000 server. It helps you pass smtp and pop email to and from the internet. Without it, Exchange server will function only as an in-house email system.

A limit will help prevent an outsider from email bombing your server to death. Imagine someone emailing your user couple of hour long porn avi files. Your server will run into a halt.

Hope this helps.

 

[zbnet]

In essence, the IMS is a gateway for converting between Exchange-format email, and SMTP email. The SMTP portion talks SMTP to the Internet, and the Exchange portion talks Exchage to the rest of your exchange servers. Content conversion is performed for every email that passes through the gateway (so it needs to be powerful), including the encoding of binary attachments into MIME format for sending out to the Internet (and the other way round as well). Note that any limit you place on the IMS is the post-encoding message size limit, and that MIME encoding can typically add 20% to the size of a file. Hence if you wish to allow 10MB attachments, you would need to set your IMS limits at something like 12MB.