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The Postfix main.cf configuration file specifies a very small subset of all the parameters that control the operation of the Postfix mail system.
2010/6/3 -This is how to really do it in postfix. This config changes sender addresses from both local originated, and relayed SMTP mail traffic.
The sender and recipient canonical maps are applied before the common canonical maps. The sender_canonical_classes and recipient_canonical_classes parameters ...
The canonical_maps parameter affects all of the addresses, including envelope and message headers. If Postfix finds a match, it makes the change. If you want ...
2023/2/2 -iRedMail uses Postfix too and it doesn't enable sender_canonical_maps / recipient_canonical_maps by default, so you're free to enable them with ...
2018/5/5 -Hello, fellas I have a couple of servers in a private LAN 10.0.0.0/24. I've set up one of the servers with Postfix in a effort to relay ...
2019/7/5 -By default, sender_canonical_maps address mapping is applied to envelope sender addresses, and to header sender addresses. sender_canonical_maps ...
In addition to the canonical maps which are applied to both sender and recipient addresses, you can specify canonical maps that are applied only to sender ...
2016/1/8 -It requires configuring a very simple canonical map in Postfix. This small change rewrites all outgoing mail on the server, including from the command line, ...
A setup like this only rewrites the sender for mails going to external adresses. Additionally local domains are excluded from SRS.