Address Tags

I had someone ask me if their server supported address tags, like Gmail has. For example their address is, bob could use for his bank email, this could enable him to sort messages easier, and tell if the bank is selling his address. I did some checking and it looks like Postfix does support this, I had to enable it in “”.

Postfix calls them “Address Extensions”

ADDRESS EXTENSIONS (e.g., user+foo)

The recipient_delimiter parameter specifies the separator between

user names and address extensions (user+foo). See canonical(5),

local(8), relocated(5) and virtual(5) for the effects this has on

aliases, canonical, virtual, relocated and .forward file lookups.

Basically, the software tries user+foo and .forward+foo before

trying user and .forward.

#recipient_delimiter = +

I uncommented the last line to enable, and restarted Postfix. It seems to be working well so far. I have also enabled it on a few other servers.

Does anyone have any other input on this? Perhaps we could add this somewhere in the Virtualmin configuration so people can make easier use of it.