my understanding is, ISPs don´t block you, but none of the big providers accepts emails from IPs of access networks. Thus if you want to run an email server at home, you need either a relay, a VPS or a VPN with an IP address having good reputation. Historically some ISP offered a relay, but often with poor quality. Joachim
-----Ursprüngliche Nachricht----- Von: Matus UHLAR - fantomas via Postfix-users <postfix-users@postfix.org> Gesendet: Dienstag, 27. Juni 2023 18:59 An: postfix-users@postfix.org Betreff: [pfx] Re: Anyone using SMTP relay through dnsexit.com? >>>>>> "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? -- Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. Due to unexpected conditions Windows 2000 will be released in first quarter of year 1901 _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
