-SkipCertificateValidatation does not seem to work

[tonyguadagno]

hi, i am executing this command:

Send-EmailMessage -to "[email protected]" -From "[email protected]" -Subject "test" -Text "test" -Server "mail.company.com" -port 25 -SkipCertificateValidatation

the cert on port 25 does NOT match "mail.company.com" but i am using the -SkipCertificateValidatation switch....this is what i get:

WARNING: Send-EmailMessage - Error: Exception calling "Connect" with "3" argument(s): "An error occurred while attempting to establish an SSL or TLS connection.

The host name did not match the name given in the server's SSL certificate.
"
WARNING: Send-EmailMessage - Possible issue: Port? (25 was used), Using SSL? (Auto was used). You can also try SkipCertificateValidation or SkipCertificateRevocation. 


Status        : False
Error         : Exception calling "Connect" with "3" argument(s): "An error occurred while attempting to establish an SSL or TLS connection.
                
                The host name did not match the name given in the server's SSL certificate.
                "
SentTo        : [email protected]
SentFrom      : [email protected]
Message       : 
TimeToExecute : 00:00:00.0235829
Server        : mail.company.com
Port          : 25

so, why is this happening? Am I doing something wrong?
thanks

[PrzemyslawKlys]

It was also reported in:

• https://www.reddit.com/r/PowerShell/comments/1cbzfg8/mailozaurr_is_a_powershell_module/

Seems this PR:

• Use simpler certificate validation callback #42

Broke it. @jborean93 do you think I should revert back?

[jborean93]

I'm unsure why it wouldn't work, it looks like v3.2.0 is the version of MailKit that is used and the code that calls this callback is

https://github.com/jstedfast/MailKit/blob/77eb92573cec5b38bafb3a1ebdd819693ac4162f/MailKit/Net/Smtp/SmtpClient.cs#L528-L551

It's the same place that also checks the [Net.ServicePointManager]::ServerCertificateValidationCallback so both should work. Maybe pwsh class inheritance is causing problems with the type where property isn't set but that's a stretch. I don't have a mail server to test it out currently sorry so up to you if you wish to revert or investigate why the property doesn't work.