AT&T, Comcast and Reverse DNS PTR Request
Reverse DNS PTR records are necessary in order to get e-mail relayed successfully. Without a valid PTR record, most […]
How to Stop E-Mail Spam for Good Using Exchange/Office365 Whitelist
SPAM and UCE (unsolicited commercial E-mail) is the bane of the Internet and E-Mail world. After using dozens of technologies […]
Exchange Server Shows Wrong Build Version After Update
After updating Exchange or installing a cumulative update, you may be using the get-exchange server command to check if the […]
Creating Rule in Exchange to Tag External E-mails and Alert Users When Sender is Outside Domain
Phishing emails often arrive disguised as internal users, however they are really from external email addresses. Many BEC (Business Email […]
AirSync exceeded the maximum of 250 objects of type Message.
AirSync exceeded the maximum of 250 objects of type Message. This error can be cause by excessive message from active […]