i am trying to configure Exchange Server 2010 on Windows Server 2008 R2 to receive emails from the internet following the danscourses tutorials:
and i followed this video for the DNS & MX records:
i don't have any windows administration skills, and i am stuck with the DNS configuration. and the following are my domain configuration i got from the hosting.
following are the steps i made:
1- Add new name server:
add > ns1.centors.com ip > Exchange Server Public IP: 184.108.40.206
2- Change the A record
change it to point to the public ip address > Exchange Server Public IP: 220.127.116.11
3- New cname record for www
and make it resolve to centors.com
4- New mx record for mail.centors.com
5- New A record for mail.centors.com:
name: mail ip: Exchange Server Public IP: 18.104.22.168
6- new A record for ns1:
ip: Exchange Server Public IP: 22.214.171.124
7- i made port forward in the router for SMTP and POP3 to the exchange server local ip address.
ISSUE: i have a user account in the active directory, and the user is member of the domain, the user is firstname.lastname@example.org and when trying to login with this account in outlook 2010 on other machine using following data:
- account type: POP3
- incoming mail server: mail.centors.com
- outgoing mail server: mail.centors.com
i always get the error: Authorization failed, check your server settings.
please advise what's wrong with the configuration, thanks in advance.