Well, first, my firm's commercial Raptor anti-pam solution supports smarthosting for outbound and inbound on an alternate port. Add any dynamic DNS solution and you are good to go. Plus you get the best business anti-spam solution. Happy to chat more about pricing.
But that leads to my answer. You can just setup a box on a VM with a static IP and do smtp authentication for smarthosting through that box and use it as a relay for your domain on an alternate port using Dynamic DNS. No need for fetchmail or anything like that. Regards, KAM On 6/9/2019 4:42 PM, Ronald F. Guilmette wrote: > I'd very much like to move my (Postfix) mail server, which currently resides > on a (static IP) end-luser broadband line, to some VM in the cloud someplace, > and then use something like fetchmail to poll that periodically to pull > down all mail for my several domains and then have fetchmail re-inject > all of those mail messages into the local Postfix. The plan would be to > get all this running and then give up my local static IP here, exchanging > it for a dynamic one instead. (This will save me a tiny bit of money on > my monthy local ISP bill.) > > Googling for options just now, it sure sounds like ODMR/ATRN would fit > my needs nicely, however I can't quite make out whether any of this > ODMR/ATRN stuff has ever actually been implemented in Postfix or not. > Has it been? > > Regardless of whether it has or not, if anyone wants to suggest or recommend > any alternative solution(s) I'm all ears. I am open to anything that > will get the job done. My only real requirements for a solution are: > > 1) Must support unlimited email addresses per each recipient domain. > > 2) Must preserve envelope sender information. > > In general, speed is not an issue, but security most certainly is. > > That having been said, I am not eager to use Jakob Hirsh's odmrd because > that SMTP server is written in Perl, and I've been known to be DDoS'd > from time to time. So I'm loath to leave anything written in Perl running > on any outward facing port. It's just way too easy for an attacker to > run the CPU usage up to 100% and keep it there if one does so. > > Looking forward to info on Postfix support for ODMR or alternatives thereto. > > > Regards, > rfg -- *Kevin A. McGrail* CEO Emeritus Peregrine Computer Consultants Corporation 10311 Cascade Lane Fairfax, VA 22032 http://www.pccc.com/ 703-359-9700 / 800-823-8402 (Toll-Free) 703-798-0171 (wireless) kmcgr...@pccc.com <mailto:kmcgr...@pccc.com> https://www.linkedin.com/in/kmcgrail
