Scheduled message cannot be sent if wildcard is removed

Description

Steps to reproduce

1. Open Config tab > Manage Websites.
2. Remove *Hostname= * *.
3. Create a Social Reach message with data on a Link/ Image.
4. Set a Scheduled time for it.
5. Run the Social Reach agent.

Expected:
The message is sent successfully.

Actual:
The message is moved to the sent list but is "in-progress" status and not sent.