On Mon, Sep 30, 2019 at 01:44:29AM +0200, Jaroslaw Rafa wrote:
> Dnia 29.09.2019 o godz. 17:33:53 Viktor Dukhovni pisze:
> >
> > http://www.postfix.org/socketmap_table.5.html
>
> I know very little about socket programming. Is there some kind of readily-
> available "wrapper" around eg. shell script (or anything other that reads
> from stdin and writes to stdout) that I can use?
The server side should be persistent and able to handle multiple
requests on a single connection. Code for this is most simply
written in Python or Perl. I would not recommend shell scripts in
this context, especially for security reasons.
You'll also need to do DNS lookups of various sorts, after correctly
parsing input email addresses into as localpart@domainpart.
> It's strange, as having MX records that point to CNAME is explicitly
> forbidden by RFC. MX name *must* resolve to an A record, not CNAME. However,
> thanks for listing the target addresses.
That's what the RFC says, but in practice all MTAs support CNAMEs, and
some domains rely on them working.
> Which means find a new VPS hosting provider (disregarding the fact that I
> have already paid up for the entire next year), configure a new server with
> all the software and services from scratch (as hosting providers usually do
> not support exporting and importing entire customers' VMs) and move all data
> to new server.
Yes.
> And all this could be ineffective if it turns out that it is
> my domain name, and not my IP address, what Google "doesn't like".
Most email sender reputation is by IP.
> Even if
> this succeeds, there is no guarantee that in the future Google will not go
> crazy again and start treating my email as spam.
Correct.
> No, thanks. Trying to configure sending mail via Gmail's server looks like a
> much more reasonable alternative compared to this...
Your call of course.
--
Viktor.
