That's the outgoing email gateway for a hospital. It stays whitelisted.
Bowie Bailey wrote:
This was listed in the Hostkarma whitelist: [198.217.64.52 listed in hostkarma.junkemailfilter.com] Can we get this IP removed? (I was going to report this directly, but I lost the email address and wasn't able to find anything on the junkemailfilter website.)