Windows server , GPO experts and O365 expert

Job ID: 31766659

Budget: £20 – £250 GBP

Hello,
I am having an issue with the domain user authentication for users.
When users are working from home they will need to be connected to VPN to login to domain. But the cache login is set to 10 logons but for some reason its not working.
Also I need to know how to make an external email sender to safe sender to a distribution list so that everytime the sender sends an email to that distribution list the recipients will not get a message on their outlook saying click here to download the picture.