On 20/09/2018 13.53, Liam Proven wrote:
On 20/09/2018 18:50, Carlos E. R. wrote:
I find blocking 25 intrusive on my freedom.
One doesn't always get a choice.
E.g. many years ago, I used AOL for connectivity, as they gave me toll-free dialup pretty much anywhere in the world.
AOL let you send on port 25 -- but it silently redirected your mail through AOL's SMTP servers, regardless of whatever the setting in your email client.
This meant that emails didn't come from where they claimed to come from, which triggered some recipients' anti-spam protection.
Even when I used AOL broadband for a while, it still did this.
Silent port redirection, transparent proxies, DNS filtering and redirection, stuff like that can remain an issue even today.
I'm fortunate that Telefónica doesn't do any of that, to my knowledge. They tried transparent proxies some years ago and had to remove them because of the huge clamour against them. -- Cheers / Saludos, Carlos E. R. (from openSUSE 15.0 (Legolas))