On 20/09/2018 12.57, Knurpht-openSUSE wrote:
Op donderdag 20 september 2018 18:50:21 CEST schreef Carlos E. R.:
On 20/09/2018 11.39, Per Jessen wrote:
Carlos E. R. wrote:
On 20/09/2018 10.28, Per Jessen wrote:
Okay, I'm surprised [Telefonica] doen't block that. It's usually the very first anti-spam measure access providers use.
Well, that's the thing, they don't block any port that I know. You may be able to browse windows computers shares across internet here. I remember that I got such attempts when I was using a modem, not a router with NAT.
I have not heard of anyone blocking outbound traffic on anything but port 25.
And I like they don't block anything! I find disgusting that Bell is blocking my access to Telefonica. If someone is using the net to spam, kill that person full access, not everybody access to some port.
It is simple, if someone uses port 25, investigate.
A waste of time and effort. It is even simpler, block 25, let everyone use 587, as it was always intended. Port 25 is for MTA-to-MTA transfers.
I find blocking 25 intrusive on my freedom. Well, don't blame the ISPs, blame the spammers that made them block 25. Years ago when my ISP started blocking they sent out a nice letter, explaining why. I could live with that. FWIW, their Enterprise programs do have 25 open.
Well, Telefonica did not, and there are spammers everywere. T-Mobile (USA) doesn't. -- Cheers / Saludos, Carlos E. R. (from openSUSE 15.0 (Legolas))