currently I have exchange and owa setup in my internal network. users can access the webmail via https://mail.company.com. this domain name has a public Internet IP address from ISP. How can my users access the webmail via the same domain name if there is network outage in my internal network ? eg. AD and DNS server is down. currently if there is network outage, we will direct users to access the webmail via the public IP address. any suggestions is welcome

Hi, Users should not be able to access webmail if AD is down - Exchange server won't run without AD Leif

only DNS server or mpls network is down.

Hi, It's difficult to access anything if name resolution does not work, but if they can resolve the url for the webmail you must just communicate that fact to the users - maybe via an intranet page or?? Leif

Hi Test to reach it through the IP address if it's very critical.. https://xxx.xxx.xxx.xxx/owa or /exchange if it's Exchange 2000/2003Jonas Andersson | Microsoft Community Contributor Award 2011 | MCITP: EMA 2007/2010 | Blog: http://www.testlabs.se/blog | Follow me on twitter: jonand82

If DNS is down, the domain name will not be resolved. Then, OWA and other client will not be accessed normally. Thanks. NovakPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.