"Jim" == Jim Wright via Postfix-users <postfix-users@postfix.org> writes:
Hey all. Recently my ISP (Spectrum) decided (after this was working for
me for almost 20 years) to make it impossible for a self hosted domain
to relay through their SMTP server unless it was actually a spectrum.com
email address being used. After going back and forth with them to try
to find a workaround, I had to give up and look elsewhere. My next stop
was with dnsexit.com.
On 27.06.23 11:01, John Stoffel via Postfix-users wrote:
I've got sorta the same issue, but it's more that Spectrum (charter)
is not allowing any emails from my personal domain hosted on Linode to
send email to their customers. Guess who runs cable in my town?
Sigh... so I too am looking for solutions.
I wonder what you two are wondering about.
ISPs and ESPs are often unwilling to provide mail relay for domains they do
not host, this is not new (well, maybe for someone).
If you have mail server, you should use it for sending and receiving mail.
Despite following their FAQ on postfix setup
(http://www.dnsexit.com/support/mailrelay/postfix.html), I kept getting
the dreaded 454, Relay access denied error message when attempting to
send. I verified all of my settings with their support but still
couldn't relay through them, even though I had working settings
previously for Spectrum (mail.twc.com).
Finally, I setup an account with smtp2go.com, jumped through their hoops
to set up various cname records for my domain, and once that was done, I
was able to relay a test email through them on the first try. So,
everything seemed to point to some issue with the dnsexit folks.
It's probably charter doing their own spam blocking by just blocking
entire netblocks.
They are not blocking anyone, they simply do not provide the mail relay
service.
My question for the list is, is anyone here relaying via dnsexit.com,
and if so, did you have similar issues that got resolved? I'd rather
use their service if possible as they are currently handling my dynamic DNS.
It's almost certainly charter just blocking netblocks. It sucks.
this is postfix mailing list. Postfix can send mail directly to recipients,
it does not need outgoing mail relay in most cases.
So, what is the real problem?
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