Email message changes being implemented across the System

By John Abella, System director, Information Security and Enterprise Architecture

 As part of our continuous assessment and improvement of Information Security at Main Line Health, we’re implementing changes to how we label email messages that originate from outside of MLHS.

Currently, any message that originates from outside of our network has the subject modified to say [EXTERNAL], as well as a banner warning across the first line of the message. This week we’re adding a new subject message that will show up as [PARTNER].

Messages labeled as [PARTNER] are from a very small number of business partners that have regular email exchanges with MLHS employees, including vendors like Independence Blue Cross, Vanguard, Taleo, and others. The initial set of approved business partners has been vetted by Senior Management as well as our Information Security team.

Messages labeled as [PARTNER] should still be examined carefully and any suspicious messages should be sent to the IT Service Desk ( for analysis.  Being tagged as [PARTNER] doesn’t guarantee a message is safe, just that it originated from a business partner that we generally trust.

Thank you for your continued support and engagement in keeping our organization safe and secure.


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