Currently it is not possible to switch the AD tenant in portal.office.com like you can in portal.azure.com.
Without that is is not possible to Access the O365 Admin Panel as an B2B guest account that has Global Admin or EXO/SPO permissions.
Login always takes me to my home tenant with my mailbox.

It is also not possible to do this by PowerShell.

So please make it possible to use portal.office.com Admin Section as an B2B guest otherwise it makes no sense that I can for example assign Exchange Admin permissions to an B2B user.

Today you have to use the regkey DelegateWastebasketStyle to control the behaviour when deleting items in a shard mailbox.

This should have a PowerShell command, just like for sent items (set-mailbox shared@contoso.com -MessageCopyForSentAsEnabled $True)

One of the companys i manage Office365 for has, no AD which means no GPO's to use with regkeys, no consistensy in Office versions and thus this gets unmanageble.

Please add a way for me to control this centrally in Exchange Online.

Change or customize start page for all users on same time.

By renaming the incorrect initial tenant domain will save a plenty cost to register new tenant and migrate data. I believe many organizations would like to change the initial domain name such as they've changed the company name. It will be more user-friendly for customer experience.

Thank you

It is very frustrating to see messages that have been lying there for weeks - who has time or remembers to go into the admin panel every day? Email notifications to the tenant owner should be standard on this. We get notified by email for everything else, why not messages?

The one-time-bypass feature is only available for Azure MFA with server/sdk implementations.

We use Azure MFA in a cloud-only setup. We don't have any server/sdk running. We would like to use the one-time-bypass feature.

In large environments (mine is 80,000 users!) it is necessary to have a the various admin roles split across several teams and personnel. To control this easier it would be great if I could use security groups from AD sync'd to AAD then assign the admin role(s) to the group instead of individually to users.

On-premises Exchange had Email Address Policies which allowed administrators to define the email addresses (SMTP:alias@domain1.com,smtp:firstname@domain2.com) that would automatically be added to mailboxes.

Office 365 desperately needs this functionality so we don't have to resort to over complicated PowerShell scripts.

Currently message trace timezone is set to UTC 0. This is really annoying. We should be able to change the timezone for this. There are posts on the forums going back to 2012 requesting this feature... please implement it.

Proposal: Have the option through GUI to disable automapping for inboxes, and/or certain individuals that have permission to that inbox.

Explanation: When you assign permissions for someone to a particular inbox (including shared) it automatically adds the mailbox to their Outlook profile - this has caused us issues. While it can be disabled through PowerShell, it's very tedious to go through and remove each user and then add each user to every inbox with automapping disabled.

The Report Message Add-In can be deployed centrally but there should be a method to control the settings/preferences in it centrally. For example, set the default option for reporting preference (e.g. always send, never send, ask every time). This should be configurable somewhere (e.g. registry key, GPO, Centralized Deployment manager, Exchange Online policy, etc. The default to ask every time is not the setting we want for our organization, but there is no way currently to reconfigure the default. Please reconsider this.

Please allow companies to disable the "Request to reset user's password" notification's if password resets are disabled in Office 365. We have internal processes in place for employee password resets and our Office 365 administrators are not typically involved.

The best solution would be a custom message that companies could display to employees who attempt to reset their passwords in O365 - this way the employee would be notified about the correct reset process.

Phishing emails are on the rise where Sender's name is used to lure recipients into trusting spam. We would like to prepend a disclaimer for emails originating outside the domain and add the sender's real email address to it. We have programmed the disclaimer but have been told by Microsoft tech. support that it is by design that sender's info is not available to be added to disclaimers.

There should be option to provide external user access to shared mailbox.
Currently only internal user with license have access to shared mailbox. But there should be option such that external users can be added as member of shared mailbox created inside the organization since shared mailbox have feasibility to co-ordinate with external domain.

Recently the uservoice "SMTP Relay via Office 365 - Keep copy in Sent Items" was apparently implemented. As far as I can tell there is no way to turn this off. Please give those of us who don't want this an option to turn if off.

Allow the creation of new remote mailboxes that are 'shared' mailboxes. At present, you have to create a regular user mailbox and then after you have synchronized this to Office 365, you then have to login to the 365 admin portal and convert it to shared. The problem with this method is that the user object on premises will always be shown as an office 365 mailbox and not an office 365 shared mailbox. Just a bit messy.

In case the big file is deleted (i.e. 1TB) from all recycle bins, it still takes this much space in the Preservation Hold Library folder. It would be great to be able to delete such file/folder at least by Global Admin. Otherwise, when the Retention Policy is set up for several years or never delete, even if the file is deleted there might be no room for the new files on user's OneDrive.