Hello,

I used before this script and well work but now i check does not work and i get error

$EmailTo = "something@server.com"
$EmailFrom = "my@gmail.com"
$Subject = "sub" 
$Body = "body" 
$SMTPServer = "smtp.gmail.com" 
$filenameAndPath = "C:\log.txt"
$SMTPMessage = New-Object System.Net.Mail.MailMessage($EmailFrom,$EmailTo,$Subject,$Body)
$attachment = New-Object System.Net.Mail.Attachment($filenameAndPath)
$SMTPMessage.Attachments.Add($attachment)
$SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, 587) 
$SMTPClient.EnableSsl = $true 
$SMTPClient.Credentials = New-Object System.Net.NetworkCredential("user", "pass"); 

I get this error 

Exception calling "Send" with "1" argument(s): "The SMTP server requires a secure connection or the client was not auth
enticated. The server response was: 5.5.1 Authentication Required. Learn more at"

Please advise me 

regards

Set your GMail account to allow less secure apps and retest

Sounds like you authentication to the server failed.

Test connection to SMTP server using telnet

Google and PowerShell have issues with TLS.

Use port 465 for SSL connections.See: https://www.google.com/#newwindow=1&q=google+smtp+server

Warning: tright now gmail is in a meltdown state.