I have a customer that claims that her emails to our staff (with @msu.edu and @rsgis.msu.edu) addresses are bounced. She used to be able to email us all the time until about one week ago. Everybody else can email us fine. We have a decent traffic of email on daily basis. I am pretty convinced that the problem is particular to them. Nonetheless, I would like to have something more tangible to show them. I was wondering if I could find if they are being blocked from MSU. I remember in the past reading somewhere of IPs or blocks of IPs that would be blocked from MSU for security reasons. Is there a way of knowing what gets blocked from msu.edu? -- Oscar Castaņeda Remote Sensing & GIS Michigan State University