This simple scenario is the outgoing mail architecture of a company.
The Domino Server (v14) receives emails from users, printers, monitoring alerts, etc., sends them to a computer that is in DMZ (antivirus) and from there they go out to the Internet.
The architecture has been working well for years, but a few days ago we were added to the spamhaus.org blacklist.
Checking the outgoing emails, there are some scheduled processes running on the domain (lotusscript agents) that once a week send mass emails of no more than 1000 emails (it doesn't seem serious).
We want to configure the domino server so that it doesn't send those 1000 emails "all together" to the antispam, but rather to hold them and send them little by little... but to avoid a spike in sending and minimize the possibility of falling back into the blacklist.
Could someone tell us what configurations we can apply to the Domino Server for this?
It seems that you will need to achieve this by modifying the agent itself so that it executes say every one hour and sends a reduced number of mails on every iteration.
A global setting to achieve this in your scenario may not be possible since it is a weekly agent.
Hello
Unfortunately, Domino does not have flow control features that would control the speed at which large volumes of mail are sent.
If you are sending with LotusScript, you could control it by adding weights, etc. in that script code.
Regards,
Shigemitsu Tanaka
Did Spamhaus confirm that it's your mass mailings that are the issue? It may not be.
Has the sending domain got a good SPF / Dmarc configuration?
Does your mail gateway support DKIM keys which you could use to apply encryption to the outbound mail?
Just because "the architecture has been working well for years" doesn't mean that you shouldn't modernise the infrastructure to move with the times. A good SPF and Dmarc configuration is the minimum requirement for successful / trusted sending these days.
If you add a "$SendAt" item to your memo document you can specify the date-time the memo is sent.
https://help.hcl-software.com/domino/11.0.1/admin/sched_messages_program.html