Some mail servers still rely on SPF (sender policy framework) and DKIM (domainkey identification method) settings as one of their many ways to algorithmically determine if an email is "junk" or not.  


So, you may get higher email opens and fewer bounces by adding a few records to your Domain DNS settings, which help to tell a recipient's email server that the message you sent via AddressTwo's email marketing system was actually from you.  


WARNING: This is a highly technical process that should only be completed by a domain expert.


Here are the text values to add to your Domain:


TXT
v=spf1 include:_spf.messagegears.net -all    
SPF
v=spf1 include:_spf.messagegears.net -all
gears._domainkey.<yourdomain.com>
k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCnnZ67teJIQQLcfbzztAOx7UMJyFVpz29RX1ZlrV9xf5yJDQyCMCHcwcN5qNaqLMr/cuVzkSW3e1vYqO/9lqfXWkXSgYM8kVeywfubh07vNxTia/5pggiiCPD0+wgSgrMqJFDoKzzFAf+wWwidaHQ9Q9Zel0+w9gWmsi56xt7mRwIDAQAB
_domainkey.<yourdomain.com>
o=~;