Milter-greylist

I've noticed that the majority of the auto-whitelisted entries in 
greylist.db are so-called 'darkmail', mail for non-existent random 
recipients at our site. An example:

XXX.XXX.XXX.XXX   <>      <858roxana@...>      123456789 AUTO # 
2005-10-19 10:43:21

I do not have lazyaw in use. I am approaching 1 million entries in the 
database and the memory-footprint is becoming an issue. Maybe incomplete 
tuples should be a special case (shorter auto-whitelist?)?

Any thoughts?

Fredrik Nyberg

On Tue, Sep 13, 2005 at 11:48:00AM +0300, Fredrik Nyberg DC wrote:
> I've noticed that the majority of the auto-whitelisted entries in 
> greylist.db are so-called 'darkmail', mail for non-existent random 
> recipients at our site. An example:
> 
> XXX.XXX.XXX.XXX   <>      <858roxana@...>      123456789 AUTO # 
> 2005-10-19 10:43:21
> 
> I do not have lazyaw in use. I am approaching 1 million entries in the 
> database and the memory-footprint is becoming an issue. Maybe incomplete 
> tuples should be a special case (shorter auto-whitelist?)?
> 
> Any thoughts?

You should not let your MX accept mail for non existent recipients. That 
leads to overloaded mail queues for mailer daemons replies and autowhitelist.

You can fix your sendmail configuration, but that may be complicated. I
wrote milter-rcptfilter to filter out invalid recipients without touching 
my sendmail configuration. rcptfilter.conf is autogenerated from our 
directory each time it is modified. 

-- 
Emmanuel Dreyfus
manu@...

Hello,

You can eventually use the access feature of the sendmail config (in myhost.mc):

FEATURE(`access_db', `hash -T<TMPF> /etc/mail/access')dnl

After you can put into the your access file the following:

to:myhost.com	ERROR:5.1.1:"550 User unknown"
to:validuser1@...	OK
to:validuser2@myhost.com	OK

You have to list all your valid users' e-mail addresses in the access database.

This is what we are using in our company.

Bests,
Attila

> -----Original Message-----
> From: milter-greylist@yahoogroups.com
> [mailto:milter-greylist@yahoogroups.com]On Behalf Of Fredrik Nyberg DC
> Sent: mardi, 13. septembre 2005 10:48
> To: milter-greylist@yahoogroups.com
> Subject: [milter-greylist] bogus auto-whitelisted entries galore
> 
> 
> I've noticed that the majority of the auto-whitelisted entries in 
> greylist.db are so-called 'darkmail', mail for non-existent random 
> recipients at our site. An example:
> 
> XXX.XXX.XXX.XXX   <>      <858roxana@...>      
> 123456789 AUTO # 
> 2005-10-19 10:43:21
> 
> I do not have lazyaw in use. I am approaching 1 million 
> entries in the 
> database and the memory-footprint is becoming an issue. Maybe 
> incomplete 
> tuples should be a special case (shorter auto-whitelist?)?
> 
> Any thoughts?
> 
> Fredrik Nyberg
>