Since yesterday, all incoming external mails are rejected due to "RBL listing". However like outbound.protection.outlook.com they are not on any RBL if I check.
This happens on both independent XG 19.0.1 I am using (Home Edition)
Could the reason be a malfunctioning SASI update?
2022-09-08 07:56:45.965Z  H=mail-db8eur05olkn2018.outbound.protection.outlook.com (EUR05-DB8-obe.outbound.protection.outlook.com) [184.108.40.206]:63787 I=[a.b.c.d]:25 X=TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256 CV=no SNI=ghasdasd.at F=<email@example.com> rejected RCPT <firstname.lastname@example.org>: Sophos Anti Spam Engine has blocked this Email because the sender IP Address is blacklisted.
Disabling RBL checks altogether lets the mails flow in again.
Seems to be a problem only with the zen.spamhaus.org blacklist. Maybe SASI does a wrong interpretation from the return codes?
Problem solved. I used public DNS (Cloudflare, Google) for querying spamhaus.org. This is no longer allowed, because then they cannot measure the fair use policy.
i have the same problem but i use google dns and problem continue and use cloudflare and work
Create a "DNS request route" for the domain spamhaus.org and point that route to the DNS server of your ISP.