Sending notification mails

[reine.sandgren]

Hi!

Try to send mail when something is not good from Veeam backup for Microsoft Office 365.

When everything is setup and I try to send a test mail it says,
The server respons was: 5.7.3 STARTTLS is required to send mail

I have added thes regkeys on machines where TLS 1.0/1.1 has been disabled to force the usage of TLS 1.2.

Locations: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v4.0.30319 and
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\.NETFramework\v4.0.30319

Name: SchUseStrongCrypto
Type: DWORD
Value: 1

Name: SystemDefaultTlsVersions
Type: DWORD
Value: 1

The SMTP setup is
SMTP server: smstp.office365.com
Port 587
and my login to a mailbox in O365

Anyone that have any solution on this?

[Polina]

Hi reine.sandgren,

Not related to the specific error you see, but here you can find some ideas on how to set things up: veeam-backup-for-office-365-f47/smtp-no ... 65279.html

And also, if you don't use SSL, try port 25 instead of 587.

Thanks!

[Mike Resseler]

Maybe a strange thing... But I noticed that you have a typo in the SMTP server, you are stating smstp instead of SMTP... Maybe that is the problem?

[reine.sandgren]

It is "smtp.office365.com" I checked now

The relay was setup in Excangen Online, and TLS was enabled but still the same.
I have tried with both 25 and 587. Nothing stops in the firewall as I can see when I test the connection from port 25.

Any more tips?

[Mike Resseler]

Not sure, please create a support call. I think our engineers will be able to look into your logs and figure out what is going on

Post the case ID here and the outcome after investigation by the engineers

Thanks
Mike