@Jared Garza being a non-disclosure state only has to do with disclosing the sale price to the public. Probate, tax delinquent, etc. are all public data. Probate and foreclosure documents have to be recorded with the county clerk. Every county is different. Some of them offer this information through an online portal (Madison & Rankin), others make you physically go to the courthouse to get it. And like @Marc Winter said, it is all required to be published in the local newspaper.
Tax delinquent lists are usually published a few weeks before that county's annual tax sale(generally last Monday of August each year). Also public data.
The best thing you can do to keep it all 100% legal and profitable is to "wholetail" the property. Close on it, actually buy the property and hold title, then sell it however you want (REIA, MLS, etc.).
But more importantly to @Jay Hinrichs point, marketing a property that you don't own without a license is illegal in MS.
Question to you Jay, if you do have a license is there a way around this? Like @Jerry Puckett stated, there is a need for this type of market. It seems that a Net Listing would be the answer, but I think the MLS prohibits them in MS