Sunday, October 24, 2010

After more than 10 years in the Domino world...

...I will leave my current position to make the jump as an IT Security specialist. I accepted this position to meet new challenges.
I will keep an eye on what's happening in the Domino world because I still want, as far as possible, to be up-to-date to not completely loose all the expertise acquired over the years.

Tuesday, August 10, 2010

German Ministers To Stop Using iPhones, Blackberrys

The German government said Monday it had asked the ministers and officials to ban the use of mobile phones iPhone and BlackBerry, due to an increase "spectacular" attacks against networks and Internet telephony in Germany.


Tuesday, March 30, 2010

Final stretch to our cross-domain configuration...except

We are doing some tests on a cross-domain configuration. Everything is in place. Configuration documents (inbound-Outbound) are in place in the admin4. It's working for the majority of our domain (8 out of 10).
For one domain, they cannot rename a user to their own domain.

Here's the complete (long) description


Any ideas?


Monday, March 01, 2010

One stop shop for troubleshooting Domino and DNS


Unable to route outbound smtp mail relating to Domino and DNS.


- Messages back up in the
- The router task displays the error message 'Waiting for DNS availability'.
- The server attempts to connect to an internet domain rather than the mail exchanger.

a few solutions...
Technote 1420956

Wednesday, November 04, 2009

A new player in the Cloud computing?

Cisco, EMC and VMware today joined forces to sell products as a private cloud offering to enterprises. Called the Virtual Computing Environment (VCE) coalition, the announcement was called "unprecedented," something destined to lead to "greater IT infrastructure flexibility."


Friday, October 30, 2009

DKIM to help fight SPAM

Have you ever heard of DKIM? duh, DKIM what's this?

DomainKeys Identified Mail (DKIM) lets an organization take responsibility for a message while it is in transit. The organization is a handler of the message, either as its originator or as an intermediary. Their reputation is the basis for evaluating whether to trust the message for delivery. Technically DKIM provides a method for validating a domain name identity that is associated with a message through cryptographic authentication

It's similar to SPF (Sender Policy Framwork)
SPF works by having domains publish reverse MX records to display which machines are designated as mail sending machines for that domain. When receiving a message from a domain, the recipient can check those records to make sure mail is coming from a designated sending machine.

DomainKeys (DKIM) enables a sending domain to cryptographically sign outgoing messages, allowing the sending domain to assert responsibility for a message. When receiving a message from a domain, the recipient can check the signature of the message to verify that the message is, indeed, from the sending domain and that the message has not been tampered with.
It seems to help for the SMTP weakness exploited by spammers

An SMTP mail has at least two parts, the envelope and the content. The envelope defines from whom the mail is coming and to whom it should be delivered. In the content is defined what sender and recipient should be shown in the mail client (doesn't matter what kind of mail client you use).

Usually both entries are the same. Spammers however abuse this weakness by entering real recipient addresses only in the envelope, whereas the content has completely different entries. Domino (as every other mail system) uses the envelope information to route the emails. Unfortunately the envelope information is deleted by the router as soon as the email has left the The result is, that the recipient gets an email without beeing listed in any field (To, Copy or Blindcopy). This behaviour is according to the RFC standard of SMTP, because otherwise no blindcopy functionality will be possible.

Do you use it?Do you see performance impacts?

We currently use Barracuda, we can enable it but from the documentation it seems that it could be have perfomance impacts.

Tuesday, October 27, 2009

Microsoft - Roadmap for Outlook Personal Folders (.pst) Documentation

In order to facilitate interoperability and enable customers and vendors to access the data in .pst files on a variety of platforms, we will be releasing documentation for the .pst file format. This will allow developers to read, create, and interoperate with the data in .pst files in server and client scenarios using the programming language and platform of their choice. The technical documentation will detail how the data is stored, along with guidance for accessing that data from other software applications. It also will highlight the structure of the .pst file, provide details like how to navigate the folder hierarchy, and explain how to access the individual data objects and properties.


From ZDNet