Domains get blocked very fast by Facebook

Some of the domains I post on FB get the FB warning "you are leaving Facebook..." after being postet just one time to my dashbord. I asign a brand new domain per profile, I use just one proxy per profile and the domain has just posted ones b4 it gets the warning and can't be auto-posted any more (cause it gets a capture if you try to post it). At the domains I put the landings in an Iframe behind a php/java shortener - so there is no way FB can "read" the real landing behind. Has someone familiar problems and a way to solve them?

Here is an example of the domains we use:

dimaria.xyz


Basically it is a normal landing - at the button we did put a smarturl.it link to cloack, under the smarturl.it link is our adserver link which than leads to the final landings depending on geo, device....

So long speech short: we need a way to post domains save on Facebook without having them banned after just one post.
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There has been quite a lot of people saying xyz domains will get banned at once by FB. Maybe experiment with a different domain extension

Try to post on related groups with your domain , post a image and include the link in the description and dont post only the link and u will minimize the risk of getting banned.
I do this for my domains for a year and I dont have this problem.

well for a start, a nake women came up on my screen! which is an immediate red flag by facebook!

That is really strange...on the landing are three girls in Bikinis....

Regarding the post with a picture: the thing is: I don't post links to groups at all. I post them only on the personal profile walls. In the groups I only post group related stuff without any links...

Is it possible that Facebook can detect your iframe cloaking and treat the domain as suspicious because of that? I'm sure they would if they could, the question whether they can.