How TECH

Sometimes when the Debian is old, and you try to install or update something, the APT doesn't work in Debian machine in Azure VM, need to update the apt. I got these errors Err http://debian-archive.trafficmanager.net/debian/ jessie-backports/main pinen                                                                                                                                                     try-gtk2 amd64 0.9.7-5~bpo8+1   404  Not Found [IP: 52.233.239.54 80] Get:6 http://debian-archive.trafficmanager.net/debian/ jessie/main gnupg-agent a              ...

Force to send all e-mail with the same email address. accepted This is how to really do it in postfix. This config changes sender addresses from both local originated, and relayed SMTP mail traffic: /etc/postfix/main.cf: sender_canonical_classes = envelope_sender, header_sender sender_canonical_maps = regexp:/etc/postfix/sender_canonical_maps smtp_header_checks = regexp:/etc/postfix/header_check Rewrite envelope address from email originating from the server itself /etc/postfix/sender_canonical_maps: /.+/ newsender@address.com Rewrite from address in SMTP relayed e-mail /etc/postfix/header_check: /From:.*/ REPLACE From: newsender@address.com