Good morning all.
I finally got the motivation to set up my own email server at home.
Specifically, I didn't notice godaddy abolished their catch-all email,
until I needed a security code emailed to the ether. (scoff here as
applicable)
I can now receive external email using mutt, and send internal mail.
Dovecot / roundcube broken, but not relevant at this time. Receiving
external email was my urgent goal, and the crisis has gone.
I can't send outgoing email. I set up SPF and DKIM records (I believe
correctly), but it turns out teksavvy blocks outgoing port 25, whilst
allowing incoming.
TSI do offer a relay at smtp.teksavvy.com, but then I get rejected for
SPF. I was going to add teksavvy into SPF, but worry I would be exposed
to anyone using the teksavvy relay being able to spoof my domain?
TSI allegedly might, or might not, open 25 outgoing on request, I've not
asked yet. I'd be interested in knowing if it makes sense to go down
this route.
I have cable internet, so I cannot get a static ip, That said, I've been
running a webserver for years, and not had problems, as the ip address
doesn't change (I think only when I've changed it, moving house,
changing modem?).
I update it manually as needed. I used to have automated dynamic dns,
but that service seems also to have been retired.
I assume not having a guaranteed static ip is really bad for an email
server, as all my email would go to whoever has my former ip address,
even if only briefly (and assuming they run an email server).
I assume they wouldn't be able to send emails (mismatching DKIM), and
I'd have to use a different domain and/or two factor authentication to
update the DNS records, or the new user of the ip address could take
over the domain.
If the new user could receive emails, I shouldn't use the domain for
anything important, at which point, what's the point?
So - Without a static ip, should I abandon the idea of running my own
self-hosted email server?
Thanks for any thoughts from the wise out there.
Tug
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