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Questions tagged [exchangeonline]

Exchange Online is the hosted version of Microsoft's messaging platform (e.g. Exchange Server).

Exchange Online is the hosted version of Microsoft's messaging platform (e.g. Exchange Server).

Exchange Online gives companies a majority of the same benefits that on-premises Exchange deployments provide. By integrating with the Microsoft Outlook client, companies that use Exchange Online can make use of hosted email, calendars and contacts, at a month price, per end user. Microsoft Exchange Online is available as a standalone solution or as part of the Microsoft Office 365 collaboration suite.

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M365 Exchange Connector Blocklisting

I am writing an Exchange Connector that will send messages from M365 to my app server, which will then relay modified messages back to M365. I understand that without Enhanced Filtering for Connections, when the message is returned to M365, the IP…
nosajsnikta
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Exchange online outbound execution order

I am writing an outbound connector for exchange online but want to understand the order of execution better. This is how I think things would happen but confirmation would be appreciated: Sender sends the message Message is sent to my server via my…
nosajsnikta
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Having Trouble with Exchange Archive Errors - 365 Hybrid

I work in a hybrid 365 environment. Someone made some changes to the archives for users' mailboxes and now I'm getting errors in 365 admin center when I look at an active user:image of error box I was able to get the details on the errors in AAD…
rkr87
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How can I transfer a cloud mailbox from user A to user B

We use Exchange Online (O365) in our organization. There is a quite huge mailbox (thee digit GB) in our tenant which belogs to an AD object we shall call user A. For reasons which are hard to explain and IMHO don't matter here, we will have to…
TorstenS
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Synchronize Exchange Online / Outlook data to OnPremise Network

I have Exchange Online and the newest Version of Outlook in my company. For years now we have the following Problem: We have a lot of Users that have multiple mailboxes, shared and personal ones, set up in one account in their Outlook on their…
SimonS
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In Exchange Online Protection, one contact became a mailbox. How did this happen?

Today I noticed that I had not received any external mail. I tried mailing myself, but it did not get through to our on-premises mail server. I checked EOP, and there I was in the mail box list. I had disappeared from the contact list. I tried…
madcap
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Can I disable spam filtering for one user in Exchange Online Protecttion?

We are using Exchange Online Protection in front of our on-premises mailserver. Is it possible to disable the spam filtering for one user only?
madcap
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How long will items be kept in an In-Place Archive with Microsoft's Default MDM Policy?

I did a lot of research to find an answer to this question, but without luck so far. The situation is as follows: Exchange Online with EO Plan 1, E3, and E5 licenses No modifications were done to Microsoft's default MDM Policy Enabled Personal…
Markus
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How are these spammers getting through?

So we've been a bit of an indirect target of spammers recently... my company has gotten a lot of complaints from customers that they are getting a lot of spam from our sales people. Normally (considering the nature of sales) I'd just smack the sales…
rudepeople
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Change the Exchange Online display name without changing the user display name in MS365

A client who uses Exchange Online asked me today to change the name his recipients see when he sends an email. Instead of just displaying the first and last name, the company name should also become part of the display name, so it should look…
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Sending out of office notification to reply-to

Customers can contact our employees via a contact form on the profile page of each employee. When the form is submitted, the employee receives a notification e-mail. The sender of this e-mail (From) is always info@mycompany.com. The entered address…
WanDal
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Spam filtering based on average ascii score

I'm trying to come up with a new spam filter based on what has been coming through our filter lately. A lot of the messages have subject lines like: "Re: ᴢᴀɴᴛᴀᴄ 【ʜᴀs】 ʙᴇᴇɴ ʟɪɴᴋᴇᴅ 【ᴛo】 ᴄᴀɴᴄᴇʀ" where most of the text isn't actually the standard ascii…
Phalse Impressions
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Is it possible to display CustomAttributes in Exchange Online

We have migrated from Exchange 2016 to Exchange Online. In the mailbox view in EAC for both 2016 and Online you can Add/remove columns to customize your view. However it seems to be limited in Exchange Online compared to that in 2016. In our local…
Laage
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How to completely re-create user mailbox in exchange online?

I am facing a problem when a migration process from GSuite led to an unconsistent user's mailbox - migration process stopped several times and finally hit mailbox size limit (100Gb) which is much more than expected (~65Gb). So the mailbox should be…
Cyrill U
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Apply Disclaimer/Warning for Messages sent to Old Domain

We're on Office 365/Exchange Online. We just completed a domain move from domain-old.edu to domain-new.edu. The .EDU TLD exclusive registrar (EDUCAUSE) is pretty strict about how long you can have two .edu domains - and we have another 5 months from…
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