When receiving an email the follow log is created: 50 5.7.350 Remote server returned message detected as spam → 550 Rejected because xx.xxx.xxx.xx is in a black list at zen.spamhaus.org ;Error: open resolver; https://check.spamhaus.org/returnc/pub/xxx.xxx.x.xxx./ It seems that Spamhaus has recent…

After reading all the sparsely detailed threads on the subject, these are the three possible solutions I have compiled to the problem of receiving mail due to Spamhaus blocking Hetzner resolvers, from least to most convenient. You can check if we are affected with: # curl -sSL https://7j.gg/chksph2…

Unable to receive mail / Openresolver

Community Support Mail

nu01 February 27, 2025, 4:53pm 8

Check this thread.

Also, ensure your dmarc, dkim, spf, mx, etc., are set correctly.

You can use the tools here to cross confirm your prerogative setups: DNS & IP Tools, Developer & Webmaster Tools, Productivity Tools, SEO Tools