Forwarding in SMTP is fundamentally flawed unless you implement SRS.

http://www.openspf.org/SRS

If you maintain the Return-Path of the originating message while forwarding you effectively spoof the originating domain.

If you modify the Return-Path to be the address of the account that forwarded a message you break the Return-Path chain and delivery issues will result in the forwarded message Delivery Status Notification (DSN) being delivered to the forwarding user and not the original sender.

SRS resolves this by modifying the Return-Path in a way that doesn't spoof the originating domain but still allows DSNs to be sent to the original sender.

Need to change Exchange online Recipient Limits. The default value is 500 and can't be modified.
In this case, users are able to send bulk\Spam messages by selecting entire global address list.

ability to delete emails in the quarantined queue that were reviewed and are irrelevant . this will make it easier to check the queue over time instead of waiting for the messages to expire.

Allow for password length longer then 16 characters.

Advanced Threat Protection (ATP) Safe Links whitelist currently has a 320 character limit, and does not allow wildecards.

Please either turn on wildcards for the urls or expand the 320 character limit to something much larger.

We should be able to see with subscription / product was assigned or removed to an office 365 Account. In the Actual audit log, there is only few information that is not relevant at all! We must be able to know who and when a specific office 365 workload is assign to a User, example (office 365 pro plus, or Skype for business)

The ability to add a company logo or image to a signature as an admin globally for all users would be nice. Currently the suggested solution to append a disclaimer isn't ideal as it always posts the image to the very bottom of the email, not the signature. This doesn't work for a back and forth conversation thread since it starts stacking the image at the bottom.

Currently we can only have 1 email sent per day notifying the user they have spam in quarantine.

The email is usually sent just after midnight so if the user does not check their quarantine it could be a full 24 hours until the use is notified that they have spam to release.

Could I suggest that at least 3 times per day this email can be sent?

Cheers

It will be better if Admins get the option to view the mail queue in Office 365. We will have more control on the email flow if this option is enabled.

Operations from sc center that Copy eDiscovery search results to a discovery mailbox would be very useful.

This operation is available only in Exchange Management Center.
but we want to implement this operation in SC center too. Please consider this function.

I have a requirement from a large customer (85K users) that needs to be able to perform eDiscovery collections for specific Outlook folders. We can do date range and Full Mbx collections, but not specific folders. This was possible on-premises, but not in Exchange Online ????

When emailing an 'attachment' from OneDrive to a recipient that does not currently have permissions as a default it it changes the permissions to everyone in the org can edit. This is very insecure. People will not then correct it to just the recipient. The default should be the recipient can view. It should default to the most secure setting and then the sender can adjust if necessary.

Want to bring network location-based conditional access policy to not only SharePoint but also the whole of office365.

Preservation Lock can be set so easily that if you click on the policy on the right it will give you the option of on and Off resulting in a lock that even Support can not remove. Either provide a secure way of enabling disabling to the user or at least give it to Microsoft Support to do it on Client's behalf.

Junkmail filtering has been a constant pain point for me with O365 business and Outlook. The spam filters have an awfully high number of false positives, and only rarely capture real spam (I don't get much on these accounts). Most of the mail that gets filtered is from the same set of senders even though I constantly tell Outlook that these messages are not Junk. O365 needs to leverage this data to improve filtering reliability.

Need to have notification to Admins when ZAP takes an action on email.
1) Need to know what was found and deleted
2) Even more importantly, need to know what was found and WAS NOT deleted since it had already been read.

I think is a good idea to add company email signature at the end of the email with the mail flow rule.
At the moment this thing is possible but when I reply or I forward an email, my signature appear at the end of all email not at the end of my message,