On 3/12/2021 8:08 AM, poindexter FORTRAN wrote:
You will want to configure at least your SPF record. If you're hosting
from your home connection, your options are really limited. Usually
you would also want your reverse dns for your IP to match your hostname
for your MX record for your mail server.
There's a great site I use called MXtoolbox.com that helps diagnose mail server problems.
Well, their sales tactics are kind of strong armed and their paid
accounts are way more than I'm willing to spend on this, roughly 10-20x
what a relay service would cost.
Of the 4 rbls that were flagged, two were false positives that weren't
listed on the actual rbl sites, one I was able to request automated
deletion and for the last, I went ahead and paid for 2 years of
whitelisting (www.whitelisted.org), mostly flagged because of the host provider's address block (DigitalOcean).
I just resurrected a VPS I've been holding onto for a couple of years, and loaded postfix from package. I added SPF and DKIM records, and the DKIM record seemed to do the trick to allow mail to pass to google.
I was able to find instructions on both online with google searches.
Yeah, I have DKIM and SPF setup correctly... google delivers fine,
didn't test yahoo mail, office365 is delivering without issue... but hotmail/outlook.com has a separate infrastructure that's been
problematic, I only paid for the 2-year whitelist as if that gets me to
my outlook.com email, I'll just leave it as-is and won't need a relay
service.
For reference, I'm using
https://mailu.io/1.7/ via Docker using a
postgresql database. Was actually super easy to setup/configure,
biggest issue seems to be the DigitalOcean list...
It does seem that Azure might be your best bet for hosting an MTA
server, as their address blocks are pretty much clean. But the host
pricing it about 30-40% higher than DigitalOcean.
B2S (General Compute, 2cpu, 4gb) is $21/month on a reserved instance for
a year, and $32 on a monthly. Buying 3-year reserved instance would be
about $500 for the three years, and from experience about $5-10/month
for bandwidth and storage by the end of the term.
I might have been able to stick with sqlite and a 2gb service (the
anti-spam configuration recommends at least 1gb just for the anti-spam,
so 2gb is probably the lowest memory), adding postgresql in the mix
recommends 2gb by itself... so just went that direction.
--
Michael J. Ryan -
tracker1@roughneckbbs.com
---
ï¿ Synchronet ï¿ Roughneck BBS - roughneckbbs.com
--- SBBSecho 3.13-Linux
* Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)