Exchange 2013 - Public Mailbox Size Increase

If you have an instance where you want to increase a public mailbox in Exchange 2013, follow these directions:

1. Determine which mailbox needs to be increased.

2. Get-Mailbox -PublicFolder -Identity Mailbox1 | fl prohibitsendquota

3. Now we will go ahead and increase the prohibitsendquota

4. get-Mailbox -PublicFolder -Identity Mailbox1 | set-Mailbox -PublicFolder -ProhibitSendQuota 21000000000

This increases the prohibitsendquota to approx 19.56GB. You may have to increase the prohibitsendreceivequota first to a value larger than 19.56GB. You can see that I set it to a value of 25GB first, before increasing the prohibitsendquota to 19.56GB

#Exchange2013 #Powershell #PublicMailbox