# Mark any form text containing any period concatenation **URL:** \ **Category:** Get Help\ **Tags:** gform\_field\_validation, gform\_entry\_is\_spam, spam\ **Created:** [August 29, 2022, 7:13pm UTC](https://community.gravityforms.com/t/mark-any-form-text-containing-any-period-concatenation/13327 "2022-08-29T19:13:20Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![kyle88](https://avatars.discourse-cdn.com/v4/letter/k/cab0a1/32.png) [@kyle88](https://community.gravityforms.com/u/kyle88)\ **Post date:** [August 29, 2022, 7:13pm UTC](https://community.gravityforms.com/t/mark-any-form-text-containing-any-period-concatenation/13327/1 "2022-08-29T19:13:20Z")
Hi everyone, I need to block any form message containing a period in between two strings, for example “bul.tc, [blah.com](http://blah.com), [this.net](http://this.net)”. I’m getting extremely inappropriate spam submissions containing out of the ordinary domain TLD extensions (.tc, .ally, .am). I think blocking anything text with period in between any two strings would be the best solution. I am already blocking form submissions that contain http and https, however these spam submissions are not including http:// or https://, so blocking http/https is not sufficient. I would need to block anything with a period in-between two strings. Upon my research, it looks like I need to add a block of code into the functions.php file. Could anyone provide me with a template I can work with? I’m relatively new to regex, so any guidance would be very much appreciated. Thank you! ---
**Author:** ![system](https://us1.discourse-cdn.com/flex020/uploads/gravityforms1/original/2X/f/fef63f0599c45e0218c30d9f5d7ca8bff9b00189.png) [@system](https://community.gravityforms.com/u/system)\ **Post date:** [September 28, 2022, 7:13pm UTC](https://community.gravityforms.com/t/mark-any-form-text-containing-any-period-concatenation/13327/2 "2022-09-28T19:13:49Z")
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