2 messages in net.sourceforge.lists.courier-usersRe: [courier-users] authenticated smtp
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Lisa MuirJan 26, 2008 1:02 pm 
Sam VarshavchikJan 26, 2008 5:10 pm 
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Subject:Re: [courier-users] authenticated smtpActions...
From:Sam Varshavchik (mrs@courier-mta.com)
Date:Jan 26, 2008 5:10:27 pm
List:net.sourceforge.lists.courier-users

Lisa Muir writes:

Hi Guys,

After having a wonderful peaceful time with about a 95% reduction in spam through fairly modest blacklist implementation, I've now hit a snag. Customer on a dyanamic ip is blocked from sending emails because their dynamic ip is on spamhaus's PBL list (I implemented Zen).

Shouldn't authenticated smtp be able to get through or does courier implement blacklisting than spamhaus etc expects? They expect that authenticated smtp won't have an issue even with servers which implement their PBL list.

Authenticated SMTP should be accepted, even from DNSBL-listed IP address. Your customer probably does not have authentication set up correctly in the mail client.