17 messages in net.sourceforge.lists.courier-usersRe: [courier-users] Last checks befor...
FromSent OnAttachments
Olivier SannierApr 26, 2007 1:31 pm 
Gordon MessmerApr 26, 2007 1:43 pm 
EsaApr 26, 2007 3:19 pm 
Olivier SannierApr 27, 2007 1:49 pm 
Gordon MessmerApr 27, 2007 1:59 pm 
Olivier SannierApr 27, 2007 2:13 pm 
Olivier SannierApr 28, 2007 12:00 pm 
Gordon MessmerMay 4, 2007 12:52 pm 
Olivier SannierMay 4, 2007 1:08 pm 
Gordon MessmerMay 4, 2007 2:13 pm 
Olivier SannierMay 4, 2007 2:34 pm 
Gordon MessmerMay 4, 2007 3:03 pm 
Olivier SannierMay 4, 2007 3:27 pm 
Alessandro VeselyMay 5, 2007 2:28 am 
Olivier SannierMay 5, 2007 2:58 am 
Gordon MessmerMay 5, 2007 10:24 am 
Olivier SannierMay 6, 2007 5:58 am 
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Subject:Re: [courier-users] Last checks before going live and anti spam measuresActions...
From:Esa (es@laitinen.org)
Date:Apr 26, 2007 3:19:15 pm
List:net.sourceforge.lists.courier-users

Olivier Sannier wrote:

4. I've seen servers that refuse mails from mine saying that the domain is not routeable. I've looked around and it seems that's because they try to contact the MX server for my domain as a way to verify the originating server and address exist. As my server is not "live" on the Internet, that does not work yet. Can this kind of behaviour be configured in Courier? And is it desirable?

You might want to check on other forums on the pros and cons of dialback/callback, as well as greylisting. SPAM-L had a lenghty discussion about callbacks a few days ago.

IMHO they shoulder YOUR spam fighting costs to others the same way spam shoulders advertizing costs to the recipients. Also, callbacks can facilitate a DDoS: imagine that your domain is forged in a spam sent to 1 million different domains, all using callbacks. Do you think your server would survive that?

esa