The document summarizes a migration project of the Uruguayan Navy's mail services from a Microsoft Exchange server setup to an open-source solution using OpenLDAP, Postfix, and Cyrus. Key aspects of the project included migrating user data and accounts over time by routing emails to the appropriate server using virtual lookup tables in Postfix. The document provides tips for successful migrations, emphasizing understanding users, applications, and data storage formats, as well as taking a software engineering approach.

1. I want to break free Migration to Free Software. Uruguayan Navy Mail Services case. Enrique M. Verdes UYLUG

3. Two migrations at CACSON Credit Union

4. Mail services migration project at Uruguay Navy.

5. ORT Uruguay University professor since 2002.

6. About what we will be talking The case Lets review the project and it's characteristics The tips How to have success in your migration project.

8. Cn. Gonzalo Montaña, Ltn. Gerardo Estellano & Alf. Benjamín Regueiro, from Navy N6 Dpt.

9. Postfix community.

10. The case Because of obsolescense of hardware a new server was needed. That meant a migration to a new version of MS Windows and Exchange server. Budget constraints made this unviable, so this was the opportunity to move to free software. I'd want to point that the navy was already using free software.

12. This was managed by Exchange transparently and we needed to emulate this.

14. Postfix as the SMTP server, for security, maturity and ease of management.

15. Cyrus for IMAP and POP access and user authentication using SASL.

16. Some homemade scripts to automate tasks.

19. With the mailEnabled attribute set to no the mail was routed to the Exchange Server. By this we move the accounts little by little.

20. LDAP is replicated in each server running Postfix.

21. As dicas!! From this and other experiences I'd like to give some tips and tools to help you who want to be free.

23. The legacy A pplications.

25. Software engineering background helps a lot!!

26. Software Engineering Life Cycle Analisys Requirements Capture Design Implementation Validation Deployment & Maintenance Retirement

28. Users ALLWAYS oppose changes by default.

30. This may help you.

32. It's virtually impossible to extract user information from Exchange.

34. ... and at the end... any questions?

35. Tank you very much Muito obrigado http://www.elgallego.info Fica de olho em http://www.pandorafms.org

36. Copyright Enrique M. Verdes – 2008 Esta obra está bajo una licencia Reconocimiento-No comercial-Compartir bajo la misma licencia 3.0 Unported de Creative Commons. Para ver una copia de esta licencia, visite http://creativecommons.org/licenses/by-nc-sa/3.0/ o envie una carta a Creative Commons, 171 Second Street, Suite 300, San Francisco, California 94105, USA.