IIS / SMTP / Properties / Drop Directory Quota

[Pizza Good]

Hi,

We had a problem with emails not being sent and we narrowed it down to the
setting located in:

IIS / SMTP / Properties / Enable Drop Directory Quota

And that if enabled the Drop directory can only be 10 x max message size, we
increased the max message size and all is well.

What I cannot find is any info if we DISABLE the "Drop Directory Quota"
option. What happens if we do that...are their any repercussions?

Thanks.