Anyone else notice this? We have one client who's intermittently blocked by McAfee and Optonline for no apparent reason. In-house Exchange 2003 server is buttoned up, all DNS/SPF records point where they should, not listed on blacklists, etc. An employee at this client tried to send email to Optonline from Gmail, and that too was rejected. Contents of the email was a scanned PDF document, nothing crazy, maybe a few KB in size.
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