Recently I update Exchange 2007 SP3 to Exchange 2010 SP3.The structure is as below:
Exchange 2007 SP3:
Server1:CAS and HUB roles a.abc.com
Server2:Mailbox role b.abc.com
Exchange 2010 SP3:
Server1:CAS and HUB roles c.abc.com
mailbox role is not set up yet till now
Till now all users are in 2007 servers,with 2007 CAS,Exchange,POP3,OWA mode is all OK.After installing and configurring 2010 SP3 CAS,I try to use 2010 CAS(c.abc.com) to logon,Exchange and OWA mode is OK,including send and receive mails.But when it come to POP3 mode,there is a problem.When configurring POP3 in Outlook 2010,no matter with sending test,just with logon matter.Sometimes,logon test is OK,without changing any configuration,sometimes get failure,with the message:"the server deny your logon,ERR Logon failure,unknow username or bad passwords",then pop a window,point out fill in the username and password.I fill in correct username and password ,it does not work all the same.I am sure there is no matter with the account.
This is not a protected groups issue
- I have tried basic,simple,secure mode in pop3 service,apprearence as the same
- This is not a firewall issue
- The client configuration is ok and has been triple-checked
- The username and pwd has been triple-checked
- OWA and Outlook access works without problems (for types of mailboxes: 2007 ,no 2010 mailboxes yet)
- POP3 service has started
Anyone give me suggestions ,thanks a lot!