I found the _spf1.intuit.com include was duplicating my standard email settings (outlook), causing me to exceed the limit of 10. --- I use GoDaddy as my email provider, so you'd need to change the first one to yours, and just in case you use salesforce, or another 3rd party, do this:
WARNING. if/when the list of IP addresses included in _spf1.intuit.com, then you may start getting your email sent to junk again.
Example:
v=spf1 include: secureserver.net include:_spf.salesforce.com include:_spf2.intuit.com ip4:12.216.231.16 ip4:12.187.184.48 ip4:12.149.174.0/27 ip4:12.187.184.32/28 ip4:12.216.231.32/28 ip4:199.16.137.0/24 ip4:199.16.139.0/25 ip4:206.225.202.0/27 ip4:206.225.218.0/27-all
(iinclude:_spf1.intuit.cominclude:_spf1.intuit.com - expands to this:
v=spf1 include:spf.protection.outlook.com include:_spf2.intuit.com ip4:12.216.231.16 ip4:12.187.184.48 ip4:12.149.174.0/27 ip4:12.187.184.32/28 ip4:12.216.231.32/28 ip4:199.16.137.0/24 ip4:199.16.139.0/25 ip4:206.225.202.0/27 ip4:206.225.218.0/27 ~all
