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There is no catch all in EO, so you have to play with Transport rules. And none of the cmdlet you would use to accomplish this with on-prem Exchange (<a href="http://careexchange.in/how-to-copy-all-ndrsdsn-to-a-mailbox-in-exchange-2013/" rel="ugc">http://careexchange.in/how-to-copy-all-ndrsdsn-to-a-mailbox-in-exchange-2013/</a>) are available in EO.
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There is no catch all in EO, so you have to play with Transport rules. And none of the cmdlet you would use to accomplish this with on-prem Exchange (http://careexchange.in/how-to-copy-all-ndrsdsn-to-a-mailbox-in-exchange-2013/ [http://careexchange.in/how-to-copy-all-ndrsdsn-to-a-mailbox-in-exchange-2013/]) are available in EO.

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Transport rules is where I was trying to go. And the rules seem to work fine for other things, but I can't get the rules to work for the NDRs being sent out by the external postmaster email of postmaster@company.com. I really need a way to have my recipients alerted when an email that's too large is sent to them but rejected.
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Transport rules is where I was trying to go. And the rules seem to work fine for other things, but I can't get the rules to work for the NDRs being sent out by the external postmaster email of postmaster@company.com. I really need a way to have my recipients alerted when an email that's too large is sent to them but rejected.

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I was pondering changing the postmaster address but was wondering if there were any caveats in doing so?
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I was pondering changing the postmaster address but was wondering if there were any caveats in doing so?

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This should be simple but apparently I'm missing something. In Office 365, how do I set it up to send a copy of all NDR messages to a specific admin email address?
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This should be simple but apparently I'm missing something. In Office 365, how do I set it up to send a copy of all NDR messages to a specific admin email address?

Send NDR alerts to Admin email for Office 365?

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.