I am on the verge of completing my first Exchange 2003 > 2010 upgrade and I'm 99% there...
All that's left now is final testing of ActiveSync from various mobile devices and the actual mailbox moves/old server decommissioning.
I had a bit of a headache with SSL certificates and an Outlook 2007 popup, but that is now resolved.
The only outstanding issue I have is this.................we have a 3rd party CRM/database system which we use for sending mail to clients & other contacts.
At the moment, it is set up using the following config:
sender e-mail address: email@example.com
reply e-mail address: firstname.lastname@example.org
Authentication Method: AUTO
SSL? (Tick box): NO
I'm trying to get this application to send via Exchange 2010 but haven't had any joy. I've changed the IP address accordingly and swapped the username/password for a user that has a live 'Exchange 2010' mailbox'.
I have tried all different combinations of SSL on/off and authentication methods but I don't seem to be getting anyway.
Please could someone look into this as soon as possible, I want to carry out the migration this weekend but need to ensure that this e-mail sending method is working fine.
Thanks in advance!!
PS. Error log is attached