XGS 87 cannot resolve url

Question

Hi 
 I have a clients XGS87, and the users cannot connect to office 365 for email. When I use policy tester with the url, I get error device could not resolve the url, please update url and try again. 
 When I go to DNS and test the name lookup, it is successful on all DNS IPs programmed. Testing with outlook.office365.com 
 Other urls seem to be OK. 
 Anyone seen something like this? 
 Regards 
 Tim

Raphael Alganes · Answer

Hi Timothy, 
 
 Thanks for reaching to Sophos Community and hope you are well. 
 
 To clarify can XGS resolve o365 url? under Monitor Analyze> Diagnostics>Tools> Name Lookup? 
 -and Does the affected clients use a XG as DNS? or public/isp dns? 
 -was there any changes on FW/end machine settings before this occured? and are all users affected or isolated cases? 
 
 If XGS can resolve on Diagnostics, kindly try using XGS as DNS end machines, to isolate and see if this is caused by the DNS config on client settings. 
 
 Thanks for your time and patience and thank you for choosing Sophos 
 
 Cheers,

XGS 87 cannot resolve url

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