Cloudron Forum

@jdaviescoates said in URGENT: In a post on an originally unrelated thread about IPv6 issues @Gengar posted this link https://www.spamhaus.com/resource-center/successfully-accessing-spamhauss-free-block-lists-using-a-public-dns/ which I think explains what's going on with all these false positive spamhaus issues people are having: The TL;DR seems to be: fill in this form https://www.spamhaus.com/free-trial/sign-up-for-a-free-data-query-service-account/

@joseph do you think this issue is from the Ubuntu OS? there are a lot off issues and why will your emails automatically stop sending. It gets disconnected entirely.

@nebulon , thanks for reply. in the first post, I copied a undeliverable testmail from spamhoaus to cloudron, b/c it was denieing the reception. here a little oversight: [image: 1720004240958-2024-07-03_12-50_cldrn_mail_deliv-fail.png] and they all look similar… [image: 1720004260697-2024-07-03_12-52_cldrn_mail-deniedy.png] all these hosts are N.O.T. blacklisted. I checked. also, false positives…

@gerard thanks for testing. A fix for this is coming next release. The issue is fairly recent. SpamHaus made some policy change when requests come from IPv6 addresses.

Good suggestion. For future reference: The current zen spamhaus check only covers SBL, SBLCSS, XBL and PBL blocklists. To query DBL, one can do host domain.com.dbl.spamhaus.org 127.0.0.1 on cloudron . Would be good to get this automated like the zen check