[the_gipsy]

What about mail servers generally rejecting email (or marking as spam) from residential IP ranges? Decades of malware sending spam has spoiled self hosting emails.

I needed some minimal mail delivery for user registration confirmation and password recovery, and I finally caved and just use some free service. It's okay since those emails are really, really, sparse in my case. But it sucks that email, this one old and open technology, is not realistically self-hostable.

[renehsz]

Yeah, hosting on or at least tunneling through a commercial IP address is definitely required in order not to be flagged as spam. Personally, I chose the latter option of hosting my MTA at home but tunneling its traffic through a VPS in a datacenter. It's been working pretty well ever since, although I'm not sure it's worth the effort versus just using a cheap hosted provider.

[the_gipsy]

Is it some kind of free VPS?

[layer8]

VPS are generally paid, but it's only $5 or less a month.