[nflug] Postfix Autoresponder

[Darin Perusich]

Postfix will only accept email for valid accounts on the system, this is
controlled by the 'local_recipient_maps' value which is normally
'local_recipient_maps = proxy:unix:passwd.byname $alias_maps'. So as
long as the user 'info' is not a valid user or alias Postfix will reject
mail for that address. To check this value use 'postconf
local_recipient_maps'.

Having said that the 'unknown_local_recipient_reject_code' variable
controls what Postfix does with mail sent to unknown recipients. The
default it normally 550 (reject mail) but some systems, like older SuSE
releases, set this value to 450 (try again later) which will cause the
mailq to grow until cleared. Check it's value with 'postconf' to make
sure it's 550.

Both of these values can to change by modifying /etc/postfix/mail.cf and
reloaded Postfix or using 'postconf -e'. See postconf(1) for more details.

If you're interested in a really really good book on Postfix I'd
recommend 'The Book of Postfix' by Ralf Hildebrandt. It's replaced the
Bat Book on my bookshelf many years ago and is actually enjoyable to read.

Wolfe, Robert wrote:
> Good morning all!
> 
> Running the latest postfix version (2.6 IIRC) on my machine at home.  I
> am wanting to set it up so that postfix sends back an autoresponse when
> someone sends an email to info@ so that I do not get any spam at that
> address.  If anyone can point me in the right direction as to the
> information I need to get this set up like this, it would be greatly
> appreciated.
> 

-- 
Darin Perusich
Unix Systems Administrator
Cognigen Corporation
395 Youngs Rd.
Williamsville, NY 14221
Phone: 716-633-3463
Email: darinper at cognigencorp.com