This is probably an inefficient script, but I needed to create it as a once off to change the wording of any user with an Out Of Office message. It will go through every account, and change any instance of swearword and replace it with censored (no, this isn’t what I needed to use it for!).

This is using the Exchange Management Shell:

$data = get-mailbox -resultsize unlimited
foreach ($user in $data){
$currentreply = Get-MailboxAutoReplyConfiguration $user.alias
$newreply = $currentreply.internalmessage -replace “swearword”, “censored”
Set-MailboxAutoReplyConfiguration $user.Alias -InternalMessage $newreply -ExternalMessage $newreply
}

You can also use this to find any accounts with an Out Of Office message containing a certain word or phrase:

$data = get-mailbox -resultsize unlimited
foreach ($user in $data){
Get-MailboxAutoReplyConfiguration $user.alias | Where-Object {$_.internalmessage -like “*swearword1 swearword2*”}
}

Used on Exchange 2010, but should work on 2007 and 2013 also. You may notice the results of InternalMessage and ExternalMessage are hard to read, as by default they’ll show the HTML coding – you may need to factor this into any searches or replaces you perform.