Creating email alias with wildcard(user*@XXX.com)

1

I am trying to create an alias that forwards anything after the username to my address(ie. USER***@123.com to USER@123.com)
I tried creating an alias with just an * after the username, but does not seem to work.
Only need to receive emails from the wildcards not send
Is there a special synax for doing this?
Thanks

2

I assume this is for organizing the inbox or signing up for services?

use Tagged emails (no need for alias, just add +tagname to email)

Example:

username+facebook@example.com which sends email to username@example.com

3

Hi!
For years I have a system where I use unique email-addresses at different places. So if web page www.domain.tld ask my email address, I give address www.domain.tld@mydomain.tld.
Postfix supports regexp aliases, but with mailinabox setup, you need to “break” this setup a bit.

/etc/postfix/main.cf change:
#virtual_alias_maps=sqlite:/etc/postfix/virtual-alias-maps.cf
virtual_alias_maps = regexp:/etc/alias.regexp

/etc/alias.regexp:
/www[.+].*@mydomain.tld/ jjussi@mydomain.tld

I can “black list” addresses (at same alias.regexp file) when needed:
/www.121carhire.com./ dev_null
/www.erentals.co.uk./ dev_null

Those black list rules are of course before those white list rules.

Reason why mailinabox don’t support regexp aliases is that sqlite3… Yes, you can do SELECT … WHERE alias REGEXP {pattern}; but that is just don’t work in this case where we need to check if www.name@mydomain.tld would match regexp pattern /www[.+].*@mydomain.tld/ and not around.