The academic messaging system ac-lyon is based on an infrastructure that has evolved in recent years. Two access points now coexist: the classic academic webmail and the national portal messagerie.education.gouv.fr. This duality complicates the configuration for staff who wish to centralize their messages in Outlook, especially since the technical parameters are not always documented in a readable manner by the institution.
Messagerie ac lyon webmail: IMAP or redirection, two very different logics
Many teachers and administrative staff at the Academy of Lyon bypass the Outlook configuration by enabling a simple redirection to their personal inbox (Gmail, Orange, Free). This solution works on a daily basis, but it poses a fundamental problem: redirected messages do not remain on the academic server.
In the event of a transfer to another academy or a change of position, the ac-lyon inbox eventually gets deactivated. Emails redirected to a personal address can no longer be retrieved from the professional environment. Configuring Outlook with IMAP allows for a synchronized copy of messages to be kept on the server, ensuring access from any device as long as the account remains active.
A detailed guide allows you to configure your ac lyon webmail by following the specific IMAP and SMTP parameters for the academy, without going through a redirection.
IMAP and SMTP parameters of the ac-lyon mail server for Outlook
The configuration relies on precise parameters that have not changed in their structure, but whose security has been reinforced. The incoming mail server uses the IMAP protocol (or POP if you prefer local downloading, but IMAP is still recommended for synchronization).

Here are the elements to fill in Outlook when adding the account:
- Incoming mail server (IMAP): mail.ac-lyon.fr, with port 993 using SSL/TLS connection
- Outgoing mail server (SMTP): the SMTP server depends on your internet service provider if you are outside the academic network. On the internal network, smtp.ac-lyon.fr may work directly
- User ID: your academic login (the one used to access the webmail), usually in the form of the initial of the first name followed by the last name
- Email address: [email protected]
- Secure connection: select SSL or TLS depending on the version of Outlook, with port 995 for POP if you choose this protocol
The most common issue concerns the SMTP server. From a home network (Free, Orange, SFR), the academic SMTP server is generally inaccessible. You will then need to use your provider’s outgoing server (smtp.free.fr, smtp.orange.fr, etc.) to send messages from the ac-lyon address.
Transfer or change of academy: what happens to your mailbox
This is an angle that official documentation rarely addresses in detail. When a staff member of the National Education leaves the Academy of Lyon for another academy, the messaging does not automatically switch to the new environment. The ac-lyon account remains active for a transitional period but eventually gets deactivated.
If Outlook was configured with IMAP, the messages synchronized locally remain accessible offline in the software. However, any new synchronization will fail once the account is closed. Messages stored only on the academic webmail become inaccessible.

Two precautions reduce the risk of loss:
- Regularly export Outlook folders in PST format, creating a local archive independent of the server
- Before the transfer, move critical messages to a local folder in Outlook (not an IMAP folder, which remains linked to the server)
- Check with the new academy regarding the timelines for creating the new mail account to avoid a period without professional access
Field reports vary on the exact duration of account maintenance after a transfer. Some staff report access maintained for several months, while others experience a quick cutoff. No uniform official deadline seems to be published by the Academy of Lyon on this point.
Cybersecurity and access portal: do not confuse the entry points
Access to academic messaging has become an issue of IT security. Phishing campaigns regularly target addresses in ac-lyon.fr, with login pages mimicking the official webmail.
Two legitimate portals coexist today. The historical academic webmail, accessible via the Academy of Lyon’s website, and the national portal messagerie.education.gouv.fr. This second portal centralizes access for all academies and applies enhanced authentication protocols.
For Outlook configuration, this distinction does not have a direct impact on the IMAP/SMTP parameters. However, the password used in Outlook must be that of the institutional academic account, not that of any personal account created on a third-party portal. Changing your password via webmail automatically updates IMAP access, which can cause a connection error in Outlook if the software has not been updated with the new password.
A simple reflex: after any password change on the ac-lyon webmail, immediately open Outlook and validate the new authentication to avoid a temporary account lock after several failed attempts.
Configuring Outlook for ac-lyon messaging remains a technical operation that is accessible, provided you do not rely on passive redirection. A well-documented IMAP setup protects access to messages over time, including during professional transition periods when the academic account changes scope.



