5.3.4 Message size exceeds fixed maximum message size

I am not able to recieve a 19mb tiff file via email, i am running exchange 2010. Here's what it says

>: Backend Replied [0d407555.0.1225308.00-041.2543209.p02c12m001.mxlogic.net]:  5.3.4 Message size exceeds fixed maximum message size (Mode: queuesafe)

I have tried to change the message limit to 20480 across global and server settings, even restarted the transport service. I do have a McAfee antispam service, even there the attachment size is set to 20mb.

What else i need to do to get this running?

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AmitIT ArchitectCommented:
You might need to increase more. Change it to 30 or 35 MB. During MIME conversion, size can vary from server attachment limit.

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Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
Also note that tiff format is not the most optimized format for file size.  Try a different format.
Simon Butler (Sembee)ConsultantCommented:
I wouldn't expect a 19mb attachment to get through a 20mb limit unless it was plain text, due to the encoding used for attachment handling.
The usual rule I use is a third more, so as advised above that could be 30mb or more.

Tony GiangrecoCommented:
Try zipping the file before sending it.
NishantAuthor Commented:
Thank you Amit. It's fixed.
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