Reject unknown recipient with local E-Mail address lists ?

[mhess]

Hi there,

is it possible to block all unknown E-Mail addresses for a domain with a local address list an the 'Who' object ?
A LDAP server is not available, the known E-Mail addresses are manuell added to an address list.

Michael Hess

 

[tom]

Hi there,

is it possible to block all unknown E-Mail addresses for a domain with a local address list an the 'Who' object ?
A LDAP server is not available, the known E-Mail addresses are manuell added to an address list.

Michael Hess

Hi Michael,

Yes, its possible but not comfortable.

Better:
In version 1.7 (available in February 07) we implementet address verification to check this - enabling with just on click.

I suggest that you wait for this - by enabling this feature you can dramatically reduce e-mail traffic.

 

[mhess]

Unfortunately we need a solution now.
Can you give us instructions how to do this with version 1.6 ?

Michael Hess

 

[tom]

Unfortunately we need a solution now.
Can you give us instructions how to do this with version 1.6 ?

Michael Hess

First, create the who object "valid user" and change the standard spam rule to analyse just the valid emails and use quarantine. Quarantine is a final action so all spam emails to valid users are sent to the quarantine. Second, accept all emails sent to valid users. Accept is also a final action and not further rules are applied. Third, block the rest. Take care on the priorities.

Based on the standard ruleset:

1. Create a new WHO object "Valid Users", add all valid e-mail addresses

2. Modify the existing rule "Mark Spam": Add the new WHO object to the rule (TO)
Mark Spam rule:
From:Anybody To:Valid Users When:Always What:Spam Action:Modify Spam Level, Quarantine

3. Add new rule: "Accept valid" (direction in, priority 77)
From:Anybody To:Valid Users When:Always What:Anything Action:Accept

4. Add new rule: "Block unknown" (direction in, priority 76)
From:Anybody To:Anybody When:Always What:Anything Action:Block

NOTE: take care and do testing after enabling these settings. Also I suggest to use the new feature in 1.7 when we release it,

 

[ahoyer2]

Are there any instructions on using sendmail as there are for exchange for blocking invalid users?

Hi Michael,

Yes, its possible but not comfortable.

Better:
In version 1.7 (available in February 07) we implementet address verification to check this - enabling with just on click.

I suggest that you wait for this - by enabling this feature you can dramatically reduce e-mail traffic.

 

[dietmar]

Sorry, we do not have a detailed configuration description for sendmail. But AFAIK you can use the access_db feature or use the Local_check_rcpt macro.

- Dietmar

 

[bct]

address verification

Better:
In version 1.7 (available in February 07) we implementet address verification to check this - enabling with just on click.

Hi there. This morning I began testing v1.7 in non-production. It will replace a v1.5 that is currently handling up to 56,000 incoming emails per day.

I am interested in using the above feature in a non-ldap enviroment.
I must be blind, but I cannot find this setting?


v1.5 was great... and v1.7 seems even better!
Thank You,
BCT

 

[bct]

never mind

Never Mind my previous post (just a few minutes ago).
I was looking for a feature named "address verification"
but I now see it is called "Verify Receivers"

Thanks again,
BCT