Hello, https://mirror.lstn.net/ is returning HTTPS certificate errors with wget. Are you getting the same errors with wget from this mirror? There seem to be no errors with wget with the other HTTPS mirrors. Interestingly, Google Chrome is not showing any Certificate errors on https://mirror.lstn.net/. wget https://mirror.lstn.net/centos/8.4.2105/isos/x86_64/CentOS-8.4.2105-x86_64-boot.iso --2021-07-08 09:35:51-- https://mirror.lstn.net/centos/8.4.2105/isos/x86_64/CentOS-8.4.2105-x86_64-boot.iso Resolving mirror.lstn.net (mirror.lstn.net)... 2607:ff68:1:4c::100, 64.31.0.51 Connecting to mirror.lstn.net (mirror.lstn.net)|2607:ff68:1:4c::100|:443... connected. ERROR: The certificate of ‘mirror.lstn.net’ is not trusted. ERROR: The certificate of ‘mirror.lstn.net’ doesn't have a known issuer. ERROR: The certificate of ‘mirror.lstn.net’ has expired. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-mirror/attachments/20210708/062913d4/attachment-0003.html>