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email rejected on VPN
I am using ExpressVPN on my MacBook Pro, running macos 10.13.6 High Sierra. My email client Thunderbird 68.7.0 is no longer able to reliably send email while my VPN is running. Thunderbird puts my ou...
>> The SMTP settings are unchanged - smtp.telus.net, port 587, no connection security.
That is the entire problem in itself. You can only connect to smtp.telus.net without any connection security from a Telus IP. If you're using a VPN, you need to use the secure smtp settings to send. I've had no issues with Thunderbird on MacOS with the correct settings in it.
Server: smtp.telus.net
Port: 1025
Security: STARTTLS <<< Important. If SSL/TLS is selected, you will get a connection error.
I'm using IMAP for receiving, and its working fine, so those settings are good - imap.telus.net, SSL/TLS, normal password.
The SMTP settings are unchanged - smtp.telus.net, port 587, no connection security.
Thunderbird says the server is rejecting a connection. That implies the VPN is passing through the connection attempted by Thunderbird.
Nighthawk
Community Power User
Community Power User>> The SMTP settings are unchanged - smtp.telus.net, port 587, no connection security.
That is the entire problem in itself. You can only connect to smtp.telus.net without any connection security from a Telus IP. If you're using a VPN, you need to use the secure smtp settings to send. I've had no issues with Thunderbird on MacOS with the correct settings in it.
Server: smtp.telus.net
Port: 1025
Security: STARTTLS <<< Important. If SSL/TLS is selected, you will get a connection error.
Problem has returned. I thought it was resolved on the 28th... I have not changed my configuration in the interim.
To recap, I am using Thunderbird on macos High Sierra, with ExpressVPN running. Thunderbird smtp config'd port 1025, connection security STARTTLS. When I send a msg, I receive this Alert msg from Thunderbird
"An error occurred while sending mail: The mail server sent an incorrect greeting: mtlp000087 cmsmtp Connection Rejected - see http://www.spamhaus.org//query/ip/(address assigned by ExpressVPN)"
The message is not sent.
If I disconnect from the VPN server, a test msg is accepted by Telus' server and received at destination. When I reconnect to the VPN, I get the error msg.
- Nighthawk
Some people have used VPNs to send spam. Sometimes their VPN servers / IP addresses get blacklisted.
That's not very informative, nor helpful. Some people who chew gum send spam. But not me!
Every IP that gets assigned to me by the VPN servers gets the same response, sooner or later. Telus or some 3rd party service engaged by Telus, is causing this. Talking to 1st level help desk is pointless. They don't even understand the problem. Last time I called the tech referred me to a pdf explaining how to configure the email client to work with gmail services. But Telus has never told me to switch. When I tried that setup, the connection was rejected because my account has yet to be shifted.
