EXCHANGE   Exchange – SMTP error: 550 5.7.1 Client does not have permissions to send as this sender



Problem

Last week I was testing the IMAP/SMTP connection of my Exchange 2013. Unexpectedly Outlook returned the following error:
Exchange - SMTP error 550 5.7.1 Client does not have permissions to send as this sender

The message does not appear completely but seems to be “550 5.7.1 Client does not have permissions to send as this sender”. Obviously the user does have the permissions (the user was the owner of the mailbox itself).

Resolution

Thanks … Read more

EXCHANGE   Exchange 2013 – IMAP NTLM authentication error



Exchange 2013 can produce IMAP issues when trying to authenticate. This is a known bug in CU9 and CU10 but in my CU12 scenario also happens.

The IMAPSettings EnableGSSAPIAndNTLMAuth atribute must be set to False in order to solve the problem.

Symptoms

Yesterday, when one of my users asked me how to configure the email client using IMAP I realized … Read more

EXCHANGE   Exchange – Error 130 using Netbackup with DAG passive node



When I was migrating my Exchange platform from 2010, I ensured that the backups using Veritas NetBackup were also working in Exchange 2013, both against the active or passive node of the DAG, and also the granular backups

Sypmtoms

At a certain moment, the backups started to fail (thanks I am monitoring the transaction log disks free space using … Read more

   Exchange 2013 – Exporting/importing mailboxes to a PST via Powershell



Stop using Outlook to export and/or import PST for your mailboxes. By using the Powershell commands (New-MailboxExportRequest and New-MailboxImportRequest) I have saved much time. And they come with some useful options.

Here some simple and interesting examples:

Simple mailbox export

[PS] C:\> New-MailboxImportRequest -Mailbox "user1" -FilePath "\\MYSERVER\PST\user1.pst"

The path must be an UNC path, a shared folder. After executing the … Read more

   Exchange – “Access to the path is denied” – New-MailboxExportRequest



When export a PST using the New-MailboxExportRequest command, a UNC path is a mandatory parameter to set the target folder where the PST file will be saved.
Probably, that folder will not have the correct to permissions to allow Exchange to write into it, so the command would return this error:

[PS] C:\> New-MailboxExportRequest "user1" -FilePath "\\MYSERVER\PST\user1.pst"
Unable to open 
Read more

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 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