Fortimail Upgrade woes

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Hi All, 

Managed to source a brand new Fortimail 100 but very old with V2 firmware.  Upgraded to 3.5.4 (Build 531) which seemed to go OK apart from a user auth prob on POP3 and IMAP.  

The upgraded to 4.0.4 (Build 146). The upgrade seemed to go AOK.  

Can login via SSH.

Can login as a webmail user

but if I go to HTTPS://fortimail/admin I get the login screen, auth AOK but then I get to https://192.168.100.95/admin/FEAdmin.html but the screen is blank!

I cannot get any admin view via the web access.

Anyone got a suggestion?

to make matters worse the box is now refusing SMTP connection attempts with Error 451 4.3.2 Try again later

Should I just bite the bullet and do a clean install of 4.3.9 (Build 548) and just start configuring afresh?

[Bromont_FTNT]

Have you tried different browsers?

If this is a new install then it may have been best to upgrade the firmware then factory reset before starting to configure.

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Yeah, tried Chromium, Chrome, Firefox and even IE  all with the same result.

And yes, I probably should have upgraded and started afresh. But I'd already invested quite a bit including updating the cert and collecting a big chunk of mail.

Without a web admin tool can I upgrade the firmware via SSH or do I go back to serial and TFTP?

[Bromont_FTNT · Accepted solution]

If you have SSH you can try upgrading with the following:

# execute restore image tftp

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Great advice, thanks.  I did that and the box came up AOK after a reboot.  Normal web management access etc.

I also solved my auth problem.  Hadn't realised the IMAP and POP3 servers required a complete email address as the UID. All my previous setups had just used the user name

thanks for the timely help