How TECH: debian

5/02/2019

Azure Debian apt update problem ?

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 md64 2.0.26-6+deb8u2 [273 kB]
Err http://debian-archive.trafficmanager.net/debian/ jessie-backports/main libks ba8 amd64 1.3.5-2~bpo8+1
404 Not Found [IP: 52.233.239.54 80]
Get:7 http://debian-archive.trafficmanager.net/debian/ jessie/main gnupg2 amd64 2.0.26-6+deb8u2 [1398 kB]
Get:8 http://debian-archive.trafficmanager.net/debian/ jessie/main libgtk2.0-bin amd64 2.24.25-3+deb8u2 [535 kB]
Fetched 7839 kB in 1s (5669 kB/s)
E: Failed to fetch http://debian-archive.trafficmanager.net/debian/pool/main/lib a/libassuan/libassuan0_2.4.3-2~bpo8+1_amd64.deb 404 Not Found [IP: 52.233.239. 54 80]

E: Failed to fetch http://debian-archive.trafficmanager.net/debian/pool/main/p/p inentry/pinentry-gtk2_0.9.7-5~bpo8+1_amd64.deb 404 Not Found [IP: 52.233.239.5 4 80]

E: Failed to fetch http://debian-archive.trafficmanager.net/debian/pool/main/lib k/libksba/libksba8_1.3.5-2~bpo8+1_amd64.deb 404 Not Found [IP: 52.233.239.54 8 0]

E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

OR this

Hit http://security.debian.org jessie/updates/main Sources

Ign http://apt.newrelic.com newrelic/non-free Translation-en

Ign http://apt.newrelic.com newrelic/non-free Translation-fr

Hit http://security.debian.org jessie/updates/main amd64 Packages

Err http://debian-archive.trafficmanager.net jessie-backports/main amd64 Packages

404 Not Found [IP: 52.233.239.54 80]

Ign http://debian-archive.trafficmanager.net jessie-backports/main Translation-en

Ign http://debian-archive.trafficmanager.net jessie-backports/main Translation-fr

Hit http://security.debian.org jessie/updates/main Translation-en

Fetched 2663 B in 2s (1324 B/s)

W: GPG error: http://debian-archive.trafficmanager.net jessie InRelease: The following signatures were invalid: KEYEXPIRED 1507383481

W: Failed to fetch http://debian-archive.trafficmanager.net/debian/dists/jessie-backports/main/source/Sources 404 Not Found [IP: 52.233.239.54 80]

12/18/2018

Forcing the from address when postfix relays over smtp

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