In message <40a97779-669c-e145-e3ec-fc82c9290...@pccc.com>, "Kevin A. McGrail" <kmcgr...@pccc.com> wrote:
>On 6/9/2019 6:18 PM, Ronald F. Guilmette wrote: >> One part that I'm sure that I -do not- understand is why you suggeted an >> alternative port number. Can you explain? > >Almost every residential ISP will block ports like 25 and 80 so you >can't run servers on the connections... I'm not too sure about that. *Outbound* port 25, yes. Lots of providers of end-luser lines do block that, as they most certainly should... with some exceptions. But for my outbound mail, that's not an issue. I plan to have my mail client just give stuff (on 587) directly to -somebody's- smarthost... either my own or somebody else's. With regards to *inbound* traffic with IP dest set to 25 or 80... I don't think that most providers give a rat's ass about that... except maybe Comcast, who may indeed block it, just as a way of extorting even more money out of their victims for "upgrades" to "business class" service. But I don't think my provider is one of the ones that plays those games. I guess I'll find out, soon enough.
