Outgoing email with VPN

[Restopaul]

Cannot send email when VPN is on.  Keep getting error message.

[BruceW]

VPNs are often used by people who send spam and other abusive material, "poisoning" the VPN's IPs.

What does the error message say? Do the two replies at https://forums.xfinity.com/t5/Xfinity-Connect-App/Cannot-send-email/m-p/3297549#M3939 help?

[Restopaul]

This is the message I get:  An error occurred while sending mail: The mail server sent an incorrect greeting: resomta-po-04v.sys.comcast.net resomta-po-04v.sys.comcast.net CSI IP 89.187.178.213 is not permitted to send messages. Please contact support if you feel this is in error..   I had found a workaround on this forum where I entered the ip for me and Comcast.  It worked once, when I restarted my computer I was back to the original problem.  If I turn off VPN everything is fine.  Using Avast Secure VPN, it doesn't have any "split Tunnelling" option or any place I can remove Comcast from the VPN feature......Paul