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on-prem meeting rooms no longer accepting meetings from office 365 users, and not sending meeting accpetance email to user

May 16, 2019, 6:53 pm
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Hello, 

We have Exchange 2013 on-prem in full hybrid mode with Exchange online, leveraging Centralized Mailflow. We also leverage AAD Connect to sync identities from on-prem AD to Office 365. Today, all of a sudden, users migrated to Office 365 are no longer able to book meetings against on-prem meeting rooms. all meeting rooms are still located in on-premise. When user sends a meeting invite to the meeting room, they do not receive an acceptance email from the meeting room, and the meeting does not appear on the meeting room calendar. I have re-ran the Hybrid config wizard, and also ran an initial sync in AAD connect...no luck.

I've verified that the value -AutomateProcessing is set to AutoAccept on these meeting rooms, and i've also tested setting the value: ProcessExternalMeetingMessages to True, but still no luck

I logged into the meeting room mailbox via OWA, and see meeting requests in the rooms inbox, message that displays is: “Your calendar couldn’t be checked to see whether this event conflicts with other events”

I've also followed this article, and verified all is correct in the calendar settings of the meeting room mailbox:

https://jasoncoltrin.com/2019/01/30/office365-resource-room-calendar-not-processing-accepting-meeting-requests/

From on-prem user to on-prem meeting room...all functions as expected. Please advise on how this can be resolved... issue seems to be with the hybrid side. (hybrid mailflow works fine, as well as free/busy across the hybrid)

I also noticed, when creating meeting invites from office 365, the Room List no longer shows available meeting rooms. seems to be related to above issue. 

Thanks in advance


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250 2.1.5 RESOLVER.OOF.IntToExt; handled internal OOF addressed to external recipient

June 7, 2018, 8:17 am
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can someone explain to me why this is being dropped?

STATUS
Office 365 used one of your organization's connectors to send the message to an external address. Here are the details:

Connector name: Outbound to <obfuscated>
External address: recipient@domain.com
Destination IP: 1.1.1.1
Destination smart host: hybridmail.domain.com 
MORE INFORMATION
You can view your organization's connector settings on the connectors page.


MESSAGE EVENTS
DATE (UTC)EVENTDETAIL

07/06/2018 14:56:09ReceiveMessage received by: EXCHONLINESERVER

07/06/2018 14:56:09ReceiveMessage received by: EXCHONLINESERVER using TLS1.2 with AES256

07/06/2018 14:56:10Send externalMessage sent to hybridmail.domain.com at 1.1.1.1 using TLS1.2 with AES256

07/06/2018 14:56:10Spam Diagnostics


ADDITIONAL PROPERTIES
Message ID:<MID.PROD.OUTLOOK.COM>
Message size:13 KB
From IP:1.1.1.1
To IP:

1.1.1.1

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Exchange 2010

September 30, 2019, 9:11 am
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Hello team,

I hope they are fine.

I have a hybrid environment, Exchange 2010 and O365, I have a problem with all the emails that are sent from Onpremise, because they are cataloged as SPAM. What I can do?

I appreciate your valuable collaboration.

---------------------------------------------------------

Hola equipo,

espero que estén bien.

Tengo un entorno híbrido, Exchange 2010 y O365, tengo un problema con todos los correos electrónicos que se envían desde Onpremise, porque están catalogados como SPAM. ¿Que puedo hacer?

Agradezco tu valiosa colaboración.



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Pending messages when email sent in to shared group

September 19, 2019, 5:02 am
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 Hi All, 

Our organisations runs an on premise version of exchange 2013 CU 21 with 12 servers and 4 DAGs (3 servers per DAG)

A few of our servers were recently migrated by a third party over to a new site/data center and ever since the migration we have encountered numerous issues.

The issue i am looking in to at the moment and hoping to get some help on is that we have a universal mail enabled global IT security group with 3 mail enabled global security groups as similar to the below

(G) BHV (GL) IT Infrastructure  (Universal Security)

Inf UK (GL Security)

Inf Asia (GL Security)

Inf US (GL Security)

When a member of the team, not just 1 member but all sends an email in to the group, sometimes it will send fine to all 31 recipients, but when sent again later it will only send to 18 or another amount less than 31. We have viewed this via running the delivery reports from ECP, the messages that don't send have a state of pending.

I have Microsoft on the case also, but dont seem to be getting very far at the moment. 

Thanks






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Issue when sending email to a mail enabled security group

June 29, 2019, 5:20 am
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Hello

We have Exchange Server 2013 in our environment.I had created a mail enabled secuirty group.Inside this groups are few other mail enabled security groups. Basically a group was created with nested groups. There are altogether around 60 users within this group from different databases.

When an email was sent to this group, only 13 users received the email. For others mail delivery failed without any NDR to sender.The email was delivered to 13 random users within the group from different databases.

Kindly suggest me if anyone has faced similar issue and how should I resolve this.

ThankYou

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450 4.7.1 error client host rejected: cannot find your hostname

March 9, 2018, 1:08 am
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Hi,

I know that there a lot of topics on this matter but i couldn't find the answer to my question.

The error mentioned shows up send to one domain at this moment. Emails send from that domain can be received by our domain.

As far as i can test my part it all seams to be ok. PTR is available (otherwise a lot of other domain would be returning a similar error)

My guess is that their DNS is not updated but I want to gather some evidence and send it to them. If possible also send a solution for them as well.

While my part is pretty much working my users will complain to me that they receive this error and they don’t want to hear that I can’t do anything and the other party should do some work.

Also because mails from their side are arriving at our side they don’t see the problem.

I hope you guys can help me out.

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Event id 4010, Exchange 2016 Messaging Policies

December 5, 2019, 7:27 am
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Hi, we are using Exchange 2016 and started getting this error:

Already checked permissions, Network Service has this set on Data\Diagnostics folder:



As for the files which give 0x000000005 error - I don't see their ACL due to lack of permissions (can only change owner), every file has guid-like name (something like "326ace4f-20f3-cb47-b35d-21e3888d0de").

I would be grateful for any help.

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Server side rules

December 10, 2019, 8:02 am
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is it possible to setup some sort of a Server Side Rule to copy emails Received / Sent to a Group coordinator ?

or is its possible setup multiple Journal account

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Remote Server returned '530 5.7.1 Client was not authenticated'

December 11, 2019, 3:38 am
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Dear All kindly help me out. i m using Microsoft Exchange 2010. Due to some configuration i am facing that issue.

I am unable to send email from other domains. My exchange server reject that email with this message.

Remote Server returned '530 5.7.1 Client was not authenticated'

if i check the option of anonymous in receive connector then it will also not asking authentication from my domain users.

therefore i unchecked the anonymous option. But now i am unable to get emails from other domains.

Kindly give me any solution i will be very thankful.

Regards,

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#5.0.0 smtp; 5.3.0 - Other mail system problem 554-'5.4.6 Message exceeded 50 hops, this may indicate a mail loop

December 16, 2019, 12:54 pm
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Hi Everyone, 

I'm new here and i've been searching for a while now and i'm not getting any answers from google. 

So the problem is, we cannot send an e-mail to a specific e-mail domain. We are getting this error (see below). We used to send e-mail to this client's address. It was working last week and suddenly this happened. We are using on prem exchange13. I checked the send connectors and I can see that we have 2 enabled connectors and using smart host to route outbound e-mails to mimecast. I hope someone can help me out. 

Remote Server returned '<[64.233.166.27] #5.0.0 smtp; 5.3.0 - Other mail system problem 554-'5.4.6 Message exceeded 50 hops, this may indicate a mail loop


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Forward "Delivery Reports" mail to another mailbox

December 18, 2019, 12:32 am
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Hi,

I would like to redirect, for one mailbox, some "Delivery Reports" email to another mailbox (only the email that contains "delivered" word in the subject).

I create a rule (in Outlook, in OWA, in ECP...) but the rule works only for the old messages, for new messages the rule doesn't works. I think because the "Delivery Reports" are different object (report) not a real mail object.

Ideas?

Thanks

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Pending messages when email sent in to shared group

September 19, 2019, 5:02 am
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 Hi All, 

Our organisations runs an on premise version of exchange 2013 CU 21 with 12 servers and 4 DAGs (3 servers per DAG)

A few of our servers were recently migrated by a third party over to a new site/data center and ever since the migration we have encountered numerous issues.

The issue i am looking in to at the moment and hoping to get some help on is that we have a universal mail enabled global IT security group with 3 mail enabled global security groups as similar to the below

(G) BHV (GL) IT Infrastructure  (Universal Security)

Inf UK (GL Security)

Inf Asia (GL Security)

Inf US (GL Security)

When a member of the team, not just 1 member but all sends an email in to the group, sometimes it will send fine to all 31 recipients, but when sent again later it will only send to 18 or another amount less than 31. We have viewed this via running the delivery reports from ECP, the messages that don't send have a state of pending.

I have Microsoft on the case also, but dont seem to be getting very far at the moment. 

Thanks






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How to require confirmation on sending external emails with attachments

December 30, 2019, 11:04 am
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Does anyone know of a way to require a user to confirm sending (via pop-up) of an email that is 

a) addressed to an external domain

b) contains an attachment

I have tried to set up the Policy Tips rule in mail flow, but it doesn't not work with selecting an external contact and attachment size > 1kb. It says you can only use Policy Tips when selecting mail contains sensitive information. 

Thank you in advanced for any advice!

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no mail flow from exchange 2007 to exchange 2013

January 8, 2020, 3:33 am
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We are performing an upgradev from exchange 2007 to exchange 2013

mail flows from 2013 to 2007 correctly

but when mails are sent from 2007 to 2013 the mails arent recived

I looked at message tracking and it seems there is not attempt from 2007 to send the mails to 2013

i have checked the frontend recive connector on 2013 and it has the exchange servers (and legacy) checked as well as echange authentication

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Not yet delivered email

October 15, 2019, 6:46 am
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Our email can't send and recieved email to specific one domain. Previously it working properly. 

Here is the details.

Status
Office 365 received the message that you specified, but delivery to the recipient (example@domain) has been delayed. We're working on delivering it.

This is the last record we have for the message: In process

More Information

Check the Message Events table below for any additional information about why message delivery might be delayed. For example, it might be due to a temporary issue trying to connect to the recipient's email server outside of Office 365. Many such delays clear up on their own, and the message gets delivered. If Office 365 isn't able to send or deliver the message within 48 hours, the sender will receive a non-delivery report (NDR) message with more information about how to fix the issue.

If you don't want to wait for the message to finish being processed, consider asking the sender to send the message again using a different email address.

Reason: [{LED=450 4.1.8 <sample@ourdomain.com>: Sender address rejected: Domain not found};{MSG=};{FQDN=w00f5969.xxxserver.com};{IP=85.13.142.5};{LRT=10/15/2019 7:34:07 AM}]. OutboundProxyTargetIP: 85.xx.xx.5. OutboundProxyTargetHostName: w00f5969.xxxserver.com

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SMTP transient error: 421 Service not available

April 4, 2019, 1:54 am
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I am facing interim issue with my oracle DB. where smtp relay is working for 99% of emails sent but only 1% being sending failed with error "SMTP transient error:421 Service not available". I am unable to trace any log entry for missed emails at exchange end in smtp receive logs.

please guide how to trace and resolve the issue. both my server are available not network connectivity issue. ping telnet trace won't show any outage or disconnect.

Br,

AA

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problem with internal exchnage ip in message header BUT ONLY WITH SPECIFIC TARGET SERVERS

January 16, 2020, 11:00 am
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Hello guys, 

I have a problem that is unclear for me. 

It is looking like I have successfully remove Exchange server internal ip from message header because I am not able too see it in message source anymore for example sending a test mail to my gmail account the header is looking like this:

So I have expeted, that I will not be able to see not so popularDelivery delayed error anymore. The reality is that I am receiving again the same error message as before. 

It si not clear to me, why I can see the internal 192.168.1.2 ip address again here when there is no similar record in gmail received header. 

Can you help me please?

I have only one send connector in Exchange 2016. 

Thank you very much. 

Tom

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Email address creation policies

January 17, 2020, 12:23 am
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Hello Team,

Can you guide me on how to create Email addresses in an Exchange hybrid setup base on conditions like,

User with same firstname/lastname….etc

If condition matches, add numeric to the email address ..etc

Please advise.

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Two issues in Email signature through disclaimer in mail flow rule

January 19, 2020, 5:10 am
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i have applied email signature through mail flow rule in exchange 2013. Choose a disclaimer rule and put the html code with active directory attributes so everytime anyone email to anyone, its name, designation appears in below email.

1st issue in this rule that this signature appears everytime the user emails either in a conversation of a email like back and forth or in new email. And our requirement is that this signature should not appear again and again when replying a email multiple times, only appear once.

How is it possible? Please guide.

Second issue, i have a put an image in signature which is a logo of our bank and that logo is located in local file server and i noticed that that logo does not appear other than desktop outlook on local LAN. Like if i email from mobile or owa or email to an external user the logo image does not appear instead image name appearing. 

How can i resolve this?

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How to stop External E-Mail Addresses

January 22, 2020, 12:04 am
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Hi,

telnet exchange2013 25

helo

mail from: myuser@gmail.com

sender OK

rcpt to: myuser@myinternaldomain.com

recipient ok

rcpt to: otheruser@gmail.com

recipient OK

Is it possible to stop this? Any internal user can just telnet to exchange server on port 25 and use any email address internal or external and send email.

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