Emailing that zip file would probably break most mail based virus checkers. I doubt the people who wrote them anticipated an infinite zip file. Too large, sure, but infinite? Probably not.
(Zeros are as good as ones and converting doesn't cost high-quality energy. It's deleting information. Thus going from an unknown state to a defined state cost high-quality energy, i.e. has to increase entropy elsewhere.)
:; gunzip -l tb1.gz ; gunzip tb1.gz; mv tb1 tb1.gz
compressed uncompressed ratio uncompressed_name
43863 55982 21.7% tb1
:; gunzip -l tb1.gz ; gunzip tb1.gz; mv tb1 tb1.gz
compressed uncompressed ratio uncompressed_name
55982 2568864 97.8% tb1
:; gunzip -l tb1.gz ; gunzip tb1.gz; mv tb1 tb1.gz
compressed uncompressed ratio uncompressed_name
2568864 1067044016 99.8% tb1
:; gunzip -l tb1.gz ; gunzip tb1.gz; mv tb1 tb1.gz
compressed uncompressed ratio uncompressed_name
1067044016 0 0.0% tb1
What's your sample size?
I spent several years in a company that developed this sort of products and I am not aware of any commercial products that do what you described. I am guessing you are referring to the mail gateways integrated with FOSS virus scanners, and still I doubt the behavior you described is typical even between them. From what I saw the restrictions were implemented in the scanners themselves, and the mail that could not be readily processed was always quarantined, and not simply "not delivered".
And I was trying to play a nice little trick on a few of my friends with that one, too...