Webhook

Hello,
Last week I setup my first campaign webhook. Via POST request I wish to deliver {contactfield=email} to external script. Campaign is based on segment. When segment has about 10 contacts everything works fine. POST requests are delivered with no problems.

The problem occurs when segment has more than ~20 contacts. I`ve tested webhook by this simple script – https://gist.github.com/escopecz/0d9adba753300b88326d no post requests was logged. In campaign menu actions I see that webhook was complited with success but it is not true.

Ive checked apache logs but I did not find any errors. Ive also tryedd run webhook via cli with no luck.

If anyone can help me where should I search a problem I would be very grateful.