> 1601906504.874 0 141.42.231.251 NONE_NONE/500 0 CONNECT securefiles.laborberlin.com:443 - HIER_NONE/- - accessRule=- - > 1601906505.047 0 141.42.231.251 NONE_NONE/500 0 CONNECT securefiles.laborberlin.com:443 - HIER_NONE/- - accessRule=- - > 1601906505.225 0 141.42.231.251 NONE_NONE/500 0 CONNECT securefiles.laborberlin.com:443 - HIER_NONE/- - accessRule=- - cache.log is more verbose with a similar domain (iris.charite.de): 2020/10/05 17:45:37| DNS error while resolving iris.charite.de: No valid address records # dig +short @141.42.5.157 iris.charite.de charite.science-it.ch. # dig +short @141.42.5.157 charite.science-it.ch iris.science-it.ch. 35.180.69.77 Huh? No valid address records? Ralf Hildebrandt Charité - Universitätsmedizin Berlin Geschäftsbereich IT | Abteilung Netzwerk Campus Benjamin Franklin (CBF) Haus I | 1. OG | Raum 105 Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 ralf.hildebrandt@xxxxxxxxxx https://www.charite.de _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users