Your biggest threat is hosting on AWS..
Given the nature of EC2, you want to ensure that the IPs you are using
are not in the midst of some abusive IPs, and AWS is still not providing
public 'rwhois' delegation to our knowledge.
Make sure that you have a correct PTR record of course, the generic EC2
PTR naming convention will not get you far..
And 'warming' up.. well, if it is normal email you shouldn't need to,
but if it is 'bulk' eg, similar content.. you do need to develop
'trust', and that isn't always about simply 'warming' up the IP.
IMHO.. Which brings me to another perfect example.. various VPN
providers who try to use EC2 IPs.. but yet don't publicize/identify
explicitly their IPs, and generate traffic that may look suspicious..
Just ran into a person who asked.. what IPs are used for Norton's VPN
service.. I could not answer them.. trolling Google and Norton's site
and forums for a bit, showed it wasn't easy to get that answer. And
doing a DNS walk on the 'supposed' ranges didn't show any results..
So, think very carefully on your choices, and what information you
should advertise to develop 'trust' for your IPs
I can't talk to convenience, security or costs.. but there might be
other hosting solutions that allow for more transparency, that might be
better for your use case.. That IS if you have a desire for transparency..
On 2024-03-25 15:58, Gerald Oskoboiny via mailop wrote:
We are planning to move the system that hosts our email discussion lists
from its old home where it has been for decades to an EC2 instance on
AWS. It does about 15k deliveries per day, most of which go to gmail or
google-hosted email systems.
Is it still necessary to warm up new IP addresses gradually instead of
going directly to this volume of deliveries? My impression is that it's
less and less necessary in the age of DMARC, SPF and DKIM.
Nothing else would be changing from the recipient's point of view aside
from the IP address (and network): the domain, return-paths, dkim keys
and selectors involved would all be the same as they have been.
The new IP address doesn't seem to be on many public RBLs, and I have
contacted Microsoft to have it removed from their block list.
Do many current sites require an IP's reputation to be established
gradually? (particularly Google) Would it just greylist deliveries for a
few hours, or fail worse than that?
The new host will be doing deliveries directly, not using SES.
Thanks,
--
"Catch the Magic of Linux..."
------------------------------------------------------------------------
Michael Peddemors, President/CEO LinuxMagic Inc.
Visit us at http://www.linuxmagic.com @linuxmagic
A Wizard IT Company - For More Info http://www.wizard.ca
"LinuxMagic" a Reg. TradeMark of Wizard Tower TechnoServices Ltd.
------------------------------------------------------------------------
604-682-0300 Beautiful British Columbia, Canada
_______________________________________________
mailop mailing list
mailop@mailop.org
https://list.mailop.org/listinfo/mailop
