Limitations on HTTP Post?

Limitations on HTTP Post?

I tested my AWS-SES/ZC app this weekend by attempting to send 200 test emails. After about 90 I got an exception violation as the http response from the post. Querying my Amazon account, I did not see any issues. I'm assuming the fault was on ZC's side. So I'm wondering if I've run-up against some limitation with http post? 

When I post to my PHP api, the deluge statement is

  1. AWS_POST={ "FROM" : input.FROM, "SUBJECT" : input.SUBJECT_field, "BODY" : BODY, "SUBSCRIBERS" : SUBSCRIBERS };

From, subject, and email body are self explanatory. Subscribers is a JSON string containing email addresses and a user's record ID number. 

So for my 200 email test, this part of the post request is 200 emails long. Maybe there's some memory limitation or maximum string length that can be used with a post like this?

John M. Whitney