Last updated: 15.06.2026 In the past few days, multiple of our resellers have reported issues where DNS resolution using the default Fortinet FortiGuard DNS servers (96.45.45.45 & 96.45.46.46) is not functioning as expected with DNS over TLS (DoT) on TCP/853.
Recently, we have seen an increasing number of support cases where resellers are unable to register their newly purchased FortiGate through the GUI during the initial login, even though the device has already been registered in the FortiCloud portal.
Please update your SEPPmail VM- or HW-Appliance to the latest OS version immediately (15.0.4.x branch). These critical updates are required to mitigate known vulnerabilities. Source: https://seppmail.statuspal.eu/info_notices/235299
Last update: 28. April 2026 Have a look at our guides for FortiOS 7.2, FortiOS 7.4 and FortiOS 7.6. In our daily support work we often see FortiGates in use on which the basic settings like time zone, host name and so on have never been set correctly. Therefore we…
Single-sign-on accounts are used for Fortinet websites such as support.fortinet.com and forticloud.com. Many other Fortinet sites use the same login.
Solution update 06.05.2026 This is a addition to the solution update published on 23.04.2024 and was just communicated by the SEPPmail support today: If certificates should be re-issued after they where revoked by Swisssign a manual check of the revocation status has to be done. See: https://docs.seppmail.com/en/07_mi_15_usr_04_advanced-settings.html#as_revocationClicking on the Check…
When using the SEPPmail Secure E-Mail Gateway for transparent email encryption, administrators occasionally encounter a frustrating phenomenon: recipients receiving unreadable emails, attachments named winmail.dat, or broken calendar entries.
Microsoft has allowed the use of IP-based connectors in Exchange Online to authenticate mail flow. However, as more organizations move toward shared infrastructure, multiple MTA (Mail Transfer Agent) systems, or shared public IP addresses, IP-based authentication has proven to be increasingly unreliable.
Im SEPPmail Admin GUI scheint es einen kleinen “Glitch” zu geben welcher dazu führen kann, dass für gewisse Administratoren der Zugriff auf bestehende GINA-Benutzer nicht mehr möglich ist. Der Workaround bzw. die Lösung dazu ist jedoch erstaunlich einfach.
SEPPmail has published a software update to fix multiple vulnerabilities. Affected versions: All versions before 15.0.3
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