this post was submitted on 14 Nov 2023
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I want to set up an outgoing transactional email server for my small business. Do I need to purchase IP blocks? Given most IPs from VPS will have bad reputation.

Please respond only if you have ran an SMTP server. Not looking for heresay.

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[–] [email protected] 1 points 10 months ago

I’ve ran postfix/dovecot for email in the past. Postfix would be the more important one as it’s the MTA. You’ll need at least one IP and a DNS registrar. That stuff isn’t so bad, the tricky part is ensuring your email doesn’t get sent straight to spam. I also configured dmarc, dkim, spf, etc to make sure my server was verifiable.

From what you’re saying; 100k emails a month from a new mail system is gonna get you on a spam list or blacklist. If no one reports you it might not be an issue. I don’t know if ISPs limit that stuff.

If you’re good with this stuff. You should be up and running in a day or so, but I’m curious to see how long the operation lasts. Most postfix how-to docs can get you started