I am attempting to set different mailbox quota's based on a users departmental "cost center" within our business.  The cost center members are scattered around our 10+ Storage Groups on our Exchange 2007 server, and each department has different mailbox quota standards, so I can't use a Storage Group setting to manage this.  A users "Cost center" number is a value set in CustomAttribute5, so the standard quota's are pretty easy to script with a get-mailbox -filter command.  The problem are users that need an exception to policy.  The plan is to put a users IssueWarningQuota and ProhibitSendQuota values into CustomAttribute13 and CustomAttribute14.  My question is how to use those two values from the get-mailbox command in the set-mailbox command.

Right now I have one line similar to the following for each cost center:

get-mailbox -filter {(customattribute5 -eq "costcenter1") -and (customattribute13 -eq $null)} |set-mailbox -issuwarningquota 300mb -prohibitsendquota 500mb 

And that will set the standard quota sizes for each costcenter1 member to the departmental standard.  The following command will produce a list of mailboxes in costcenter1 that should have non-standard quota's set:

get-mailbox -filter {(customattribute5 -eq "costcenter1") -and (customattribute13 -ne $null)}
 
But I'm not sure how to get customattribute13 and 14 to be set as a value that can be used in the piped set-mailbox command.

I'm not a scripting guy, but I'm trying to learn.  Thanks for any help.

This UNTESTED one-liner might work:

Get-Mailbox -Filter {(customattribute5 -eq "costcenter1") -and (customattribute13 -ne $null)} |ForEach-Object {Set-Mailbox -Identity $_.alias, -IssueWarningQuota $_.customattribute10 -ProhibitSendQuota $_.customattribute13 -WhatIf}

NOTE the -WhatIf - with that there, it will only tell you what it WOULD do - remove it to actually modify mailboxes.

Karl

No joy. Here's the error:

Set-Mailbox : Cannot convert 'System.Object[]' to the type 'Microsoft.Exchange.Configuration.Tasks.MailboxIdParameter' required by parameter 'Identity'. Specified method is not supported.

I tried using $_.name instead of $_.alias just in case, but it had the same error.

I haven't looked up the error yet.