Hi,We have exchange 2007 and some group mailboxes we want to share with other mailbox users. I have given sent as permission and mapped the mailbox to their outlook.But when they try to send emails from that group mailbox, they are getting delivery failure as 'they dont have enough permissions to send this email'Please advise how to rectify this Jinesh Kumar

Hi Jinesh,~ Are they member of any admin groups? Exchange setup sets Deny Send-As permission on Enterprise & Domain Admin.Exchange 2007 Permissions: Frequently Asked Questionshttp://technet.microsoft.com/en-us/library/bb310792.aspx~ It may takes upto 2 hours for permissions to become effective due to cache of Information Store.Amit Tank | MVP - Exchange | MCITP:EMA MCSA:M | http://ExchangeShare.WordPress.com

Hi Amit, It started working nowthanksJinesh Kumar