Microsoft Exchange | Outlook | Rules Quota size

Check quota size Limit of a single mailbox:

Get-Mailbox "mailbox" | fl SamAccountName,RulesQuota

Increase the rules quota size for a single Mailbox:

Set-Mailbox "mailbox" -RulesQuota:256KB

Increase the rules quota size for all mailboxes:

Get-Mailbox|Set-Mailbox -RulesQuota:256KB

Check quota size Limit of all mailboxes:

Get-Mailbox |fl SamAccountName,RulesQuota,

Hint:

Exchange 2003 has some size limitations