How to Manage Quota Messages

Check this link from Microsoft:

http://technet.microsoft.com/en-us/library/bb232089.aspx

Sender ID Framework SPF Record Wizard

Check this link:
http://www.microsoft.com/mscorp/safety/content/technologies/senderid/wizard/

Number of numbers in MIME From exceeds maximum threshold

I got this message when one of the users is trying to send an email to himself and the message bounced back. He cannot also send receive emails from the other users.

Resolution:

In the Exchange Management Console, you have to put the email address with your domain name and set this email as the default "Set As Reply". You have to put here also your Active Directory user account.

In the GFI MailEssentials Configuration, configure correctly POP3 Mailbox details like POP3 server(mail.emirates.net.ae); Login: xxxxx@xxxx.xx Password: xxxxxx.
In the Mail Delivery option: you have to put your Active Directory user account in the "Alternate Address for this mailbox" and select "Send mail to the alternate address".