Send mail trough TELNET over OVH with .batch script - powershell

Question

I would like to use TELNET to send an email with the content of log.txt using one of my OVH mail accounts (noreply#clement.business hosted on OVH) to a gmail address. Due to my society security politics I am not able to install anything on the servers but the OS itself.
So I tried with both batch and PowerShell but without success, I even tried manually, I can telnet OVH but then don't know how to login.
Here's a few things I tried :
$subject = $args[0]
# Create from/to addresses
$from = New-Object system.net.mail.MailAddress "noreply#clement.business"
$to = New-Object system.net.mail.MailAddress "random#gmail.com"
# Create Message
$message = new-object system.net.mail.MailMessage $from, $to
$message.Subject = $subject
$message.Body = #"
Am I even suppose to write here
"#
# Set SMTP Server and create SMTP Client
$server = "I have no idea how to OVH here"
$client = new-object system.net.mail.smtpclient $server... Server what, POP3 ?
# Do
"Sending an e-mail message to {0} by using SMTP host {1} port {2}." -f $to.ToString(), $client.Host, $client.Port
try {
$client.Send($message)
}
catch {
"Exception caught in CreateTestMessage: {0}" -f $Error.ToString()
}
I cannot figure that out, it is such a struggle to deal with...
PS : I did use the OVH guide about POP3/SMTP setup, but did not work, or I have no idea what I am doing. Useful link here as well.

Answer 1

Just so you know the difference: POP3 is used to receive email, SMTP is used to send email. You can't use them interchangeably.
A quick google for 'ovh smtp server' shows that the ovh help pages list the SMTP servers as:
Server name: ns0.ovh.net
Port of the outgoing server: 587
Username: identical to the email address
Password: your password for your account, as defined in the creation of the email address
I can't test these as I don't have an ovh account.
I would use Send-MailMessage to send the email as it's much easier to use than your solution:'
This will send an email with the file log.txt as an attachment:
$username = "noreply#clement.business"
$password = "passwordforemailaddress" | ConvertTo-SecureString
$credentials = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList $username, $password
$parms = #{
From = "noreply#clement.business"
To = "email#gmail.com"
Attachment = "C:\folder\log.txt"
Subject = "Daily Logs"
Body = "Your body text here"
SMTPServer = "ns0.ovh.net"
SMTPPort = "587"
Credential = $credentials
}
Send-MailMessage #params
And these params this will use log.txt as the email body text:
$parms = #{
From = "noreply#clement.business"
To = "email#gmail.com"
Body = Get-Content "C:\folder\log.txt"
Subject = "Daily Logs"
SMTPServer = "ns0.ovh.net"
SMTPPort = "587"
Credential = $credentials
}