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Questions tagged [exchange]

Questions about any version of Microsoft Exchange Server or Exchange Online, Microsoft's email and unified communications server product. Because of tight integration with other systems, related questions may overlap with Active Directory, Office 365, and Skype for Business (aka Lync Server or Office Communications Server). Questions about Microsoft Outlook may be a gray area, with Super User as an alternative site to ask on.

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18 views

Outlook 2010 with Exchange Online - Which version of TLS is being used?

How do I check which version of TLS is being used in Outlook 2010 with Office 365 Exchange Online mail server? Thanks
1
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1answer
29 views

Powershell send-MailMessage Exception

My script for sending emails using Office365 with an admin credentials. The script worked about 6 month, ago but recently it has not been working although it has not been changed. I have tried to ...
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1answer
23 views

Auditing permission changes in Exchange

What's the best practice to verify that a change made to any permissions in Exchange was actually made by a legitimate admin with an approved change ticket? We were recently asked to implement Manage ...
1
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0answers
15 views

Exchange Online - how to manage no-longer synchronised account?

So we've got a setup of on-prem AD and EX Online. They are synchronised by aad connect and we've expanded the schema in AD, so we have the attribute to hide users from GAL. Now, we've parted with a ...
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1answer
25 views

Blocking recurring meetings for Room Mailbox

we'd like to block users from scheduling recurring meeting a room mailbox. All of our room/equipment mailboxes are locked down to 1080 days already. room mailbox is configured with the following ...
0
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2answers
58 views

Out of Office for Disabled User

We disable there exchange email and that in turn disabled the account in AD. We would like to set up auto out of office reply for the employee has left the company. is this possible if her account is ...
1
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1answer
53 views

Exchange 2010 Mail Moderation - Limit the number of recipients

I am trying to create a Transport rule to limit some users from sending e-mails to too many recipients, such action would require mail moderation approval I had an idea of using when the message ...
0
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1answer
26 views

Single user not able to connect to OOF URL on Outlook 2010

I was recently asked to setup an Automatic Reply(Out of Office) message for a user that recently left the company I work at. All users log into Terminal Servers to do their work and as such, to access ...
0
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1answer
45 views

Outlook 2019 Compatibility with Exchange 2010

Is Outlook 2019 supported with Exchange 2010? The following tables identify the mail clients that are supported for use together with each version of Exchange: https://docs.microsoft.com/en-us/...
0
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1answer
34 views

503 error on Exchange 2016

Immediately after login into EAC/ECP I'm presented with 503 error. However, simply refreshing the page brings up EAC as expected and it works fine after that. Until I log out and attempt to log in ...
0
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1answer
14 views

Exchange 2016 & Outlook Anywhere - Repeated Authentication Popup when Outside Network

Exchange 2016 on-premises, Outlook 2013/2019 When a user is inside the network/on the VPN everything is fine. When a user brings their laptop outside of our network: Outlook pop-ups asking them to ...
1
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3answers
31 views

Azure AD Connect remediation for O365 (how to setup test domain?)

I need to stand up a test domain to try and fix accounts that have been synced into AAD. I have had zero experience with Azure AD or O365, so I'm not sure how to proceed. A previous admin setup our ...
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2answers
27 views

What happens when you re-run the Office365 Hybrid Configuration Wizard in an environment that is already setup?

Existing Infrastructure was an Exchange 2010 + Office365 Hybrid Configuration with all mailboxes hosted in Office365 which was configured months back. If we run the Hybrid Configuration Wizard again ...
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2answers
56 views

Which server to choose in Hybrid Configuration Wizard when adding new Exchange2016 server into existing Hybrid Environment with Exchange 2010?

Current environment has an on premises Exchange 2010 server configured in Hybrid Mode with Office365 with all mailboxes hosted within Office365. We just installed an Exchange 2016 server into the ...
1
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1answer
22 views

Exchange 2016: How to audit mailbox user access to get their IP?

I have a mailbox user (Exchange 2016) who belief that his mailbox was hacked. So I want to audit the access to his mailbox. I enabled audit via Set-Mailbox -Identity "Ben Smith" -AuditEnabled $true ...
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2answers
90 views

“Relay Access Denied” error when trying to use Office 365 as mail relay

I redirect outgoing emails in my organization to my postfix MTA. from there, i'm redirecting the mails to office 365 for relaying to the original recipients. For external recipients, I get the ...
0
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0answers
37 views

MTA poor reputation [duplicate]

I'm facing MTA poor reputation and I'm fighting against it since days without success. MTA poor reputation had plenty topics so I verify/modify many aspect of my configuration such as: Verify ...
0
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2answers
58 views

DKIM in Exchange Server 2010

I need to generate DKIM public/private keys for Exchange Server 2010. https://www.emailarchitect.net/domainkeys/kb/dkim_exchange_2007_2010_2013.aspx I have run the DKIM Installer but it was hanging ...
0
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1answer
65 views

change email address script + guidance

We have a tiny company that is currently with @xxxx.com and the brand changed to @yyy.com Can someone give me few guidance on steps to create a script that will change all of the @xxxx.com addresses ...
3
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2answers
89 views

Exchange 2016 and Sever 2016 DCs: Unknown KDC Encryption type

Team, Exchange environment is all 2016, no mix. Parent and child domains exist, but the functional level of each domain and forest is 2012R2. All domain controllers have been 2012R2 until recently. ...
0
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1answer
58 views

SendGrid sent to spam on internal domain

I'm using SendGrid with a whitelabel to send email from my domain name, a-non-existent-account@example.com. The whitelabel works perfectly for outside delivery, but when sending to an inside account ...
0
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0answers
50 views

Office365 Exchange – How do I add storage accounts? (DropBox, Google Drive, etc)

Background: I am evaluating migration to office365 for a small company. Currently, they have and want to continue to use Google Drive for their document storage, so moving that part for OneDrive is a ...
2
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1answer
31 views

Forwarding emails from postfix to exchange server?

I have some web application which is used as a webmail client to exchange. I can pull emails from exchange server via IMAP, but problem is at sending mails. Application is using MSMTP client to send ...
1
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1answer
30 views

SMTP Address re-use in Office 365

About 6 hours ago I removed an SMTP address from one of our users using the Office365 admin portal. I want to attach this address to a new shared mailbox. Trying to create the new mailbox with the ...
0
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1answer
32 views

Security Groups in Exchange Distribution Groups?

We do have a case where we would like to setup an Exchange distribution group (created using New-DistributionGroup with closed joining and leaving) in order to easily reach multiple teams. Adding ...
0
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1answer
23 views

Exchange 2010 Room Calendar conflicts

we are having an issue where our conference rooms are allowing meetings that start at the same time. We do have the room auto allow, "Allow conflicting meeting requests" is unchecked, "Conflict ...
0
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1answer
22 views

Remove meassge-id exchange

we are planing to remove message-IDs from all incomming mails on our Exchange server. The reason is our SPAM-Filter which redelivers content-filtered mails with the same message-ID as the orignal ...
1
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1answer
30 views

Why can't I edit my own contact info in Global Address List of Outlook client anymore?

Why can't I edit my own contact info in Global Address List of Outlook client? The environment is on-premise exchange server 2016, in the ECP/Exchange Admin Center I already have user accounts set up ...
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2answers
37 views

IIS binding added, now outlook prompts for credentials infinitely

Disclaimer - this isn't my area of expertise, I'm learning as I go, if I need to adjust level of detail here or redact information please let me know, no offense intended. Customer needed to pass a ...
0
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0answers
23 views

Realizing an archive like mailbox in exchange

An employee left the company but his e-mails should stay accessible for some colleagues. The user account has to be deleted (not only disabled). Exporting the mails to a PST is not wanted. I would ...
0
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1answer
37 views

New-MailboxExportRequest error- isn't within your current write scopes

I'm running a command to export the mailbox of a particular user based on some conditions. Account I'm logged in with is already have role Mailbox Import Export Command- New-MailboxExportRequest -...
0
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1answer
37 views

how long can deleted emails stay in recoverable items folders in Archive mail box?

I notice there is a retention tag can help you move emails from recoverable items folders in main mailbox to recoverable items folders in archive mailbox. May i know default how long can it stay in ...
0
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0answers
40 views

Rejecting emails with mismatched Header/Envelop FROM

We've been receiving some spam/phishing emails that are managing to get through on occasion and the majority have a MAIL fROM our domain but their ENVELOPE from is whatever spammy address. My ...
0
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1answer
22 views

Add multiple header field matches to Exchange rule

I can't seem to find it so perhaps there isn't a way but does anyone know how (or if) to add multiple header field matches to an Exchange Online rule? I'm talking about when you create a rule and ...
1
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2answers
33 views

How does the RecipientRateLimit function?

I am looking at implementing a New-ThrottlingPolicy and using the RecipientRateLimit, but I am not too sure how it works. Does it limit the unique number of recipients a mailbox can send to? Lets ...
0
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2answers
123 views

The proxy address “smtp:email@domain..com” is already used by the proxy address or LegacyExchangeDN

when attempting to remove email addresses of MailContacts in Exchange Server 2016 using the following cmd: Set-MailContact -Identity "bob" -EmailAddresses @{ remove="SMTP:bob@domain.com" } -...
0
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1answer
13 views

Delegated access to shared mailboxes without rights to deleting messages

So I'd like to grant my users access to a shared mailbox with delegated access - easy enough. (We use Office 365) But how can I restrict that access, so they can't DELETE anything in that mailbox? I'...
0
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2answers
75 views

In a hybrid exchange environment, how to send email from a mailbox in exchange on-prem to another mail box in exchange online?

We deploy hybrid exchange using the HCW, AADC has been deployed as well. Mailbox A is created on exchange online. Mailbox B is created on exchange on-prem. Now I can send an email from A to B. But I ...
0
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2answers
39 views

Unwanted emails are sent from some exchange users

In our exchange environment some unwanted emails are sent from a few users to abnormal addresses with .xyz suffix.They stuck in queue as the destination server isn't available. Affected users got ...
0
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1answer
36 views

Exchange 2016 Block IP after too many Failed Login Attemps

I would like to block an ip address if I see too many failed login attempts from it. I would like to block SMTP,OWA,IMAP and POP3 failed login attemps. I don't want to block user account but the ip. ...
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0answers
31 views

WIreshark Filter to track Exchange Traffic from PC to Exchange Server 2007 and out

I've got a Windows Exchange Server 2007 that appears to be sending mail when I've confirmed nobody is on the network. I'm trying to determine if the exchange server is compromised or if a client on ...
0
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1answer
61 views

Exchange 2016 Delay Time after Message rate limit is reached

I'm trying to find and change the duration of blocks after Message rate limit is reached in the exchange 2016. In the above link I couldn't find anything about how long exchange keeps blocking a ...
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1answer
51 views

Outlook 2010 OWA cannot delete emails

I have an Exchange Server 2010 setup Version: 14.03.0382.000. Through the outlook web access OWA the send/receive email works but all move mail operations and deletions fail with the following error: ...
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0answers
26 views

Outlook 2016 Calendar Event Sync Issue

I am working on an issue with Outlook 2016. User A has full mailbox rights and calendar ownership rights of User B's calendar. User A manages the calendar events for User B and also invites other ...
7
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2answers
312 views

Is ADFS a must-have, when you deploy hybrid exchange server?

With AADC implemented in our AD and Office 365, we want to deploy a hybrid Exchange next, is ADFS a must? Thanks!
2
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1answer
47 views

Exchange Server 2016 Mailbox Database Replication with only 2 servers

I'm trying to figure out how to make two Exchange Servers replicate. My goal is to make that Exchange Mail keeps working even if one of the server fails or is for whatever reason unreachable. They ...
0
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1answer
24 views

Exchange distribution group alias restriction - can it start with an @ character?

At a previous employer a few years ago, all Exchange distribution groups were created such that the first character of the alias (the name you see in Outlook) began with an @ character. The ...
2
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0answers
28 views

Users getting locked out on local Domain Controller after switching default Exchange mail address to different domain

Originally, all of our users were on a single domain (ie. domain1.com) . After merging with a 2nd company, it was decided that we would use the 2nd domain (ie. domain2.com) as the primary company ...
0
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1answer
54 views

Why Microsoft Exchange SMTP doesn't provide any authentication mechanisms?

How come that on one particular machine in our network, MS Exchange SMTP doesn't provide any authentication mechanisms? On my machine it goes: CLIENT > EHLO [10.51.5.31] SERVER > 250-mail....
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1answer
74 views

Mails from PHP mail() are not received through Microsoft Exchange Online server

a friend of mine is running a contact form on a website which sends the e-mails through the PHP mail() function (CMS used is Contao). The e-mails are sent without a problem to other recipients, so ...