Question about smtp-server blocking acces

[Pankh 0]

As an attempt to get this sub going.

My provider (Ziggo) is occasionally blocking AirVPN's exit addresses in the Netherlands on their smtp.server. Sometimes it works for a few days and next thing you know is that I have to change servers a few times a day.

 

I have tried to use their ip address instead, but that gives a certificate error. One way is to avoid this is probably to add a route outside the tunnel, but I think that's the easy way out. 

So, without changing to a paid mail-service, what can I try next? Ziggo is not helping because "it's a thirth party issue"

Thanks for thinking with me!

 

Edited ... by giganerd
Removed questionable link to unrelated software download