A Sender Policy Framework (SPF) Primer for Exchange Administrators

Email spam continues to be a huge problem for organizations these days, and it usually falls on the Exchange administrator to do something about it. Aside from the usual anti-spam measures we can put in place to protect our own servers from spam, we also need to consider how to prevent spammers from spoofing (imitating) the domain names for our […]

Read more

Microsoft Exchange Action Could Not be Performed on User

When deleting a mailbox from Microsoft Exchange Server, the following error is sometimes displayed, especially if the user has been an Exchange Administrator: Microsoft Exchange Error – Action Remove could not be performed on object ‘User’ Error: Active Directory operation Failed on User. This error is not retriable. Additional inFormation: Access is denied. Active directory response: 00000005: SecErr: , problem […]

Read more

How to Grant Read-Only Access to an Exchange Mailbox

Granting a user read-only access to the mailbox and calendar of another user in an Exchange Server organization. This is a common scenario and the solution is reasonably simple though perhaps not obvious. Let’s look at the scenario of Alan Reid trying to access the mailbox of Alex Heyne. With no access configured Alan gets an error message when he […]

Read more

Email Fundamentals: What is an MX Record?

One of the less well understood components of a working email system is the MX record. I do find a lot of IT administrators looking after Exchange servers who don’t really understand what an MX record is and how they work. DNS Fundamentals MX stands for “mail exchanger”. An MX record is a type of DNS record, so any understanding of MX […]

Read more

[Exchange Tutorial] How to create mail enabled contact?

Contact  is ideal when you want user to communicate with non-Microsoft mail system and external SMTP addresses. It is know as recipient in older exchange environment,  now in Exchange 2003, contacts are created in Active Directory and viewed in the Global Catalog in the same manner as a mail-enabled user object. Each contact can be assigned an SMTP address in […]

Read more

Exchange recipients limit

In fact, this information is easily available on technet, but sometimes it is useful to organize and put them in one place. Exchange 2010 and Exchange 2007  recipients limit There is an important change compared to Exchange 2003 – Distribution group are treated as one recipient. We can restrict recipients limit at the following levels: Organization Transport server Receive Connector […]

Read more

Email Fundamentals: How to Read Email Message Headers

The headers of an email message contain very useful information for Exchange Server administrators. Header information includes such things as which email servers were involved in the transmission of the message, and whether the email message was scanned for spam or viruses. This is useful both for internal and external email messages. In one recent real world example we used […]

Read more
1 2