geonames.org. 560 IN TXT "v=spf1 a mx ~all"
geonames.org. 562 IN A 188.40.62.8
geonames.org. 600 IN MX 10 mail.geonames.org.
geonames.org. 600 IN MX 20 mail2.geonames.org.
mail.geonames.org. 568 IN A 188.40.62.8
mail2.geonames.org. 567 IN A 188.40.33.19
In contrast mails from this forum come 176.9.39.79 via info@geonames.org - so they might get bad reputation.
Thanks a lot for pointing this out. The forum was moved to an other sever during the last server upgrade and it is still there.
Will update the dns config to include this server.