EXCHANGE   Exchange 2013 – Assign permissions to book room resources



I created some room mailboxes in Exchange 2010 and gave book permissions to some users using EMC (Exchange Management Console).

Now, after migrating all my mailboxes to Exchange 2013, I need to change some permissions on the room mailboxes. But no way to perform the changes in the web console.

The only way to view and modify booking permissions is Read more

EXCHANGE   Exchange 2013 – Emails sent in TNEF winmail format



Some users notified me that some external recipients could not open sent attachments.
After some tests I realized that the problem only appeared for external contacts.

When sending this email…
Exchange 2013 TNEF Remote Domain 1

to a contact configured in the Active Directory, the Gmail web client showed this:
Exchange 2013 TNEF Remote Domain 3

The same recipient without existing in Active Directory receives the email correctly:
Exchange 2013 TNEF Remote Domain 2

My users notified that … Read more

EXCHANGE   Exchange 2013 – Solved the “Search results limited to 250” bug



As explained in a previous post (Exchange 2013 – Search results limited to 250), there is reported bug in Exchange 2013 that limits the search results to 250.

Microsoft released CU11 (Exchange 2013 – CU 11 released) that was supposed to fix (among others) this bug. Unfortunately, after updating and testing… no success.

I opened a … Read more

EXCHANGE   Exchange – Outlook connection issues after deleting Public Folder



After migrating all my mailboxes, etc… to Exchange 2013, I am in process of uninstalling the legacy Exchange 2010 servers. Some minutes after deleting a public folder some users started to report issues with their Outlook clients… (emails stuck on the outbox, no new emails on the inbox…)

Checking the "Outlook Connection Status" I could see continuous connections and disconnections … Read more

EXCHANGE   Exchange – 421 4.4.2 Message submission rate for this client has exceeded the configured limit



An application started to log random error messages when trying to send emails through one of my Exchange receive connectors. So I checked and filtered the "Client Frontend" receive connector that showed at certain minute 6 email deliveries.

2016-01-12T17:49:00.530Z,EXCHANGESRV\Client Frontend EXCHANGESRV,08D31A7027871E90,3,10.20.20.5:587,10.10.6.10:59301,<,EHLO server1,
2016-01-12T17:49:00.811Z,EXCHANGESRV\Client Frontend EXCHANGESRV,08D31A7027871E90,43,10.20.20.5:587,10.10.6.10:59301,*,,Proxy session was successfully set up. Session for application1 will now be proxied

2016-01-12T17:49:01.155Z,EXCHANGESRV\Client Frontend EXCHANGESRV,08D31A7027871E92,3,10.20.20.5:587,10.10.6.10:59302,<,EHLO 
Read more

EXCHANGE   Exchange – Monitor mailbox database copies using Nagios



This post shows a Powershell script I use to monitor the status of my Exchange mailbox database copies and raises a critical alert if any of them is not "Mounted" or "Healthy".
Exchange Nagios Database Copies OK

Exchange Nagios Database Copies Alert

The script takes advantage of the Nagios passive checks and the configurations shown on my previous post "Nagios – Using passive checks without agent".

Here is … Read more

EXCHANGE   Exchange 2013 – CU 11 released



Exchange 2013 cumulative update CU11 was released on 15 December!
https://support.microsoft.com/en-us/kb/3099522

It solves some important problems but I was looking forward to hearing good news regarding the searches limitation to 250 bug 😀
See Exchange 2013 – Search results limited to 250 – SomoIT


[UPDATE Jan 11 2016]

Just installed Exchange 2013 CU11 and the issue still not solved for Read more

EXCHANGE   Exchange 2013 – Search results limited to 250



A few weeks ago some users reported issues with email searches as Outlook returned 250 results maximum.

I usually dont perform big searches in my mailbox so I didnt know if I also had the problem but after some tests I realized that several factors came into play:

– Outlook option to limit searches
Outlook - option improve search speed limite results
To allow big amount of … Read more

EXCHANGE   Exchange – “453 4.3.1 Insufficient system resources”



Today some users have reported an issue with emails that have been received with hours of delay

I've traced one of the emails on my Ironports and I've seen the following…

......
15 Dec 2015 13:29:38
(DCID 1061887) Delivery started for message 578750 to user@maildomain.com.
15 Dec 2015 13:29:38
(DCID 1061887) Message 578750 to user@maildomain.com delayed. Reason: 4.3.0 -
Read more

EXCHANGE   Exchange – Good practices configuring disks for databases



For each database use its own database LUN and its own transaction log LUN

Independent LUNs offer better perfomance, disk corruption error isolation…

Exchange database transaction logs disks

Depending on your disk and exchange environments, maybe this configuration means too many LUNs.
A single LUN for each database+logs is also a good choice.


Use volume mount points

To avoid using lots of drive letters use … Read more