On Mon, 27 Jul 2009, Simon Waters wrote:

On Monday 27 July 2009 11:13:34 Martijn de Munnik wrote:
Losing catchall seems to be the best solution but some of my customers
want to create an emailaddress for every website the register on.

m...@desjors.nl
pay...@desjors.nl
deb...@desjors.nl

They could use the "recipient_delimiter" for this.

$postconf -n | grep recipient_delimiter
recipient_delimiter = +

simon+pay...@example.com
simon+...@example.com

How does that interact with virtual domains stored in a db? Any weirdness with that and say, Dovecot's LDA? I'd love to add this capability when I migrate us to Postfix.

We had a guy with a domain that's very similar to "ebay.com". Some ebay phisher decided to use "serv...@domainlikeebay.com" as the return address. If the customer did not have a catchall, we would not have had to deliver nearly 100K bounces to him... His reason for a catchall was that he didn't want to make 200 aliases that matched all the addresses he'd given out.

Charles

Of course the spammers might figure that one out eventually, but most fall
into the stupid category. Besides if the spammers figure it out I'll just
change my email to s+i+m+...@example.com and refuse email to lesser parts of
the address.

Simon

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