> Emails must be relayed on port 25. Thanks guys. This is the confirmation I needed. So then it's a limitation due to protocol specs as opposed to smtpd, yes?
> And in any case, I would advise this over trying to set it up at home. I will eventually rent a VPS from a proper provider. I'm really just testing things out right now before maybe realizing this is all too big of a challenge or something. On 4/22/2021 at 11:03 PM, "Archange" <[email protected]> wrote: > >Hi, > >Le 23/04/2021 à 00:52, [email protected] a écrit : >> Hello, ED. From your response, I'm not entirely sure if I >explained my >> intent properly. > >It was very clear. > >> Sorry if I'm just being dumb, but to clarify: I'm running >OpenBSD in a >> VM on my home machine in hopes of getting better acquainted with >the >> OS for later use in a VPS hopefully. From the VM, I'm trying to >send a >> basic test mail to, for example, any Gmail address. I'm not >expecting >> any inbound mails to the VM (i.e. a "do-not-reply", outbound- >only >> mailer). I'm using the default smtpd.conf file, so if I've >understood >> the documentation correctly, it should be trying to perform MX >lookups >> instead of relying on an external SMTP service, right? > >Yes, and it likely did. But then it tried to reach them on port >25, and >failed. > >> I've read that this should be doable anyway? Albeit higher risk >of >> being flagged as spam. > >When sending from home, yes. Some people even totally block IP >coming >from “home ISP”. The reason why your ISP is blocking port 25 and >people >do this, is that most emails coming from those kinds of hosts are >in >fact botnets. > >> So, theoretically, if my ISP did not block port 25, would I then >be >> able to send a mail without the need for an external SMTP >service? Or >> would I likely be getting other errors? > >It should work. But since your ISP *is* blocking port 25, it >won’t. >Emails must be relayed on port 25. > >If you cannot unblock it from your ISP, then the solution is >indeed a >VPS somewhere in a proper data center. Might not even be 5$/month, >VPS >start event at 1$/month if you have very low needs (in this case >just >relaying emails). And in any case, I would advise this over trying >to >set it up at home. > >Regards, >Archange
