On Sat, Apr 2, 2016 at 9:07 AM, David Gerard <dgerard(a)gmail.com> wrote:
GMail is being flaky as hell about accepting or not
accepting email
from the RW server, 173.255.233.133 - sometimes works, sometimes hits
spam, sometimes gets 550 refused (with no particular reason given).
Google doesn't do customer service, of course.
We don't *seem* to be in the email blackhole lists (I see our IP
173.255.233.133 gets 6 DNSBL hits in
http://www.kloth.net/services/dnsbl.php but I go to the sites in
question and they say it's not listed); so the only other hypothesis
that springs to mind is that they don't like email coming from J.
Random Linode VM (and at least one DNSBL does consider that a reason).
Has SPF/DMARC helped anyone with this sort of thing?
What does one do in this case? Is there e.g. a commercial third-party
email relay service that, say, GMail users will get mail from?
Hi David,
You absolutely should setup/configure SPF, DKIM and DMARC so that your
domain is authenticated. (See below for links)
Even with those things set appropriately, you might just find that a 3rd
party sender will be the only way to get reliable delivery; especially if
you're hosting on a VM (e.g. Linode, Digital Ocean) rather than a full
dedicated server with static IP that you know is "clean".
Also, Google as a transport (using them for SMTP relay) is not a good
idea. I know for a fact that as a paying Google Apps customer (with only
two paid seats), I'm unable to send more than ~90 messages per hour. So,
I'm moving to a 3rd party like SendGrid, MailGun etc.
Finally, and not least of all, MediaWiki apparently still has a crufty
internal email system. I haven't given these a try (because my mailing
issue is with CiviCRM), but check out these extensions. (Read commentary
on the SwiftMailer extension page)
https://www.mediawiki.org/wiki/Extension:SwiftMailer
https://www.mediawiki.org/wiki/Extension:Mailgun
I've wrtitten up everything in my journey to better email delivery
https://freephile.org/wiki/Email
https://freephile.org/wiki/Email_Marketing
https://freephile.org/wiki/SPF
https://freephile.org/wiki/DKIM
https://freephile.org/wiki/DMARC
Greg Rundlett
https://eQuality-Tech.com <https://equality-tech.com/>
https://freephile.org