Hi Walter,
On Sat, 10 Dec 2016 11:51:34 +0100 Walter Alejandro Iglesias wrote:
> So, in general and based on your experience, do you think using dkim
> (that implies daemon, port redirections, etc.) is really worth?
In terms of delivery to popular free mail providers, it sees to me that
reverse DNS that matches forward DNS & HELO host name are worth more.
Strict SPF breaks with forwarding (mailing lists) so it it must be
vague (~all), which is a little value.
Any empty DMARC ("v=DMARC1\; p=none") record may help a tiny bit too.
All these extras try to change the Simple Mail Transfer Protocol in to
a Complicated Mail Transfer Protocol,.. because of the spam problem...
A few responsible ISPs block outbound access to port 25, forcing their
dynamic customers to authenticate through their port 587 relay servers.
Cheers,
--
Craig Skinner | http://linkd.in/yGqkv7
