CFMAIL not writing to spool

I am working on CFMX7 Enterprise Edition. The CFMAIL was working perfectly fine until sometime ago. Now, the CFMAIL doesn't work at all. Ran all customary checks and found that the .cfmail files are not written in the spool folder at all. When i physically place a .cfmail in the folder, the mail is being sent.

The problem is CFMAIL ignores to deposit mail messages in the spool folder. I always use try/catch. No errors.

Did someone encounter similar issues?

Thanks
sentill