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Port 25 is blocked by default for many ISPs around the world, and it makes sense. Look at it this way: If it was open by default, a lot of IPs would be blacklis
by NorwegianDude 5y ago
Port 25 is blocked by default for many ISPs around the world, and it makes sense. Look at it this way: If it was open by default, a lot of IPs would be blacklisted, making them basically unusable for email anyway.
You can always rent a subnet or a server including network and host mail yourself.
- gfody 5y agoyou can also call your isp and get port 25 unblocked, gp's experience hasn't been my experience
- jethro_tell 5y agoI suppose you can, but in my experience, I think you'll find that people proactively find the dynamic ranges of IPs in eyeball networks and make it very difficult to get mail accepted. If you want to send email from your own server, you will either have to get a 'business/static IP' account or use an IP in a block where you can both control the RDNS and servers are expected to be. i.e. a VPS provider or colo IP range.
- pooper 5y agoOn a related note, what if I want to run a mail server but only for incoming emails? As in I want to buy a domain and create basically a sinkhole email address and create email addresses like hn@example.com I never need to reply from that email. I just need to be able to read emails I get. Should be much easier, right?
- jethro_tell 5y agoThat should be pretty easy. It mostly depends on the exact configuration of the networking where your mail host is and your ability to correctly lock it down so it's not a spam machine. Receiving email is pretty straight and forward, filtering it can be a little tougher but should be fine.
- zrail 5y agoResidential IPs are generally proactively added to RBLs by the ISPs themselves as a form of spam protection. Before they started doing that it was basically whack-a-spammer all day every day for them.