Cloudron mailing list not recognizing PRVS tagging

[Klaus]

I have Cloudron mailing lists which are configured to only allow members to post.

However, when an email that is PRVS-tagged is sent to the list, the sender is not received and I get errors like this:

{
"ts": 1725626928001,
"type": "denied",
"direction": "inbound",
"uuid": "6DCB0050-188F-43C4-A77E-E8D5ADC94844.1",
"messageId": null,
"mailFrom": "prvs=0979ff155d=someemail@somedomain.de",
"spamStatus": null,
"mailbox": null,
"quotaPercent": null,
"rcptTo": [
"somemailinglist@mydomain.de"
],
"remote": {
"ip": "2001:7c0:0:76::11",
"port": 56440,
"host": "mail-out01.belwue.de",
"info": "mail-out01.belwue.de",
"closed": false,
"is_private": false,
"is_local": false
},
"authUser": null,
"relaying": false,
"pluginName": "cloudron",
"errorCode": 902,
"message": "Cannot send to restricted list",
"rejectionCountLastHour": 0
}

[girish]

Cloudron mail server doesn't support PRVS. We have implemented SRS instead .

[Klaus]

But I can't control how other mail providers send their email. That makes the "private list" feature somewhat useless because there'll always be some people who use PRVS....

[girish]

@Klaus Which email provider are you testing with? We can try to implement it.