I would advise not assuming the email ISP will forward blindly all the email it gets.
Back then years ago I ran an ISP, and the most strange ever support call I get was a competitor buying a modem of ours, and escalating a support call our email server was not forwarding *their* email. C: Well, our main server queue is full of messages and spam, and we just pointed our email server to yours to alleviate it...and it does not goes through.... ME: You know our central email server besides having anti-spam and grey listing, only forwards our own domain, right? (we had other email servers for corner cases, but it even then it would not fit their...special case) On 8 August 2017 at 22:39, Kevin Chadwick <m8il1i...@gmail.com> wrote: > I understand that given everyone uses gmail, hotmail or mail provided by > some multinational hosting service they assume mail coming from > residential connections cannot be other thing but spam sent from hacked > machines. But someone paying for a static IP in a residential > connection is the opposite case. When you have to deal with thousands > of users you resort to any trick you find on the Internet and start to > blindly blacklist all; this is a big servers problem. And the more > users you have to deal with the worse. On the contrary, from my part, I > have just a pair of personal addresses, so it's not a big deal for me to > audit my server and use more sane, less harmful and, overall, more > effective measures to filter spam and to prevent spam be sent from my > machine. And I think this is the direction everyone should point to > instead of resting day after day more and more on big companies for > everything. In general, everyone should tend to decentralize instead of > monopolize. The real problem is the passive attitude most people assume > in the use of the Internet (and life in general but I don't want to bore > you with cheap philosophy. :-)) > > > > > > Regards, > > > Thank you for your advice. > > > > +1, way more spam comes from universities and enterprise machines than > residential static ips with PTR records. It is not your error to fix. > > BTW Microsoft have their own SPF sign up thing but if I recall it was too > much hastle and maybe pay for. > > Keep ignoring those that suggest using your ISP, why would you send *all* > your mail through a likely untrustworthy mail system. > > Just accept that hotmail users often fish mail out of spam because the big > mail systems are crappy. > -- Regards, -- Rui Ribeiro Senior Linux Architect and Network Administrator ISCTE-IUL https://www.linkedin.com/pub/rui-ribeiro/16/ab8/434
