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Most cloud providers (e.g. Google [1] and Amazon) as well as ISPs block outgoing traffic on TCP port 25 (SMTP) so it's actually fairly hard to run your own SMTP
by oxplot 11y ago
Most cloud providers (e.g. Google [1] and Amazon) as well as ISPs block outgoing traffic on TCP port 25 (SMTP) so it's actually fairly hard to run your own SMTP server to begin with.
[1]: https://cloud.google.com/compute/docs/tutorials/sending-mail/ https://cloud.google.com/compute/docs/tutorials/sending-mail...
- michaelmior 11y agoTrue, but many people will try to do it anyway. Amazon will allow you to send email on request. They just have a form you need to fill out.
- oxplot 11y agoGiven their concern for ranking of their IP space, they'll be watching you with fifty eyeballs after granting you access.
- deleted 11y ago[deleted]