Question on Earthlink and dnsbl.sorbs.net

2 msg	Duplicate messages with always_bcc
14 msg	[OT] Saving outgoing email Gmail style
3 msg	451 error
10 msg	Postfix 2.5 release candidate (and 2.6 snapshot...
2 msg	postfix errors when sending smtp auth via yahoo
4 msg	Documentation enhancement: Adjusting DB file pe...
11 msg	I don't want Postfix to confirm users via telnet

Question on Earthlink and dnsbl.sorbs.net
\ Doug (15 Jan 2008)
. \ Listaccount (15 Jan 2008)
. \ mouss (15 Jan 2008)

36 msg	Re: Enforced Outbound TLS (part deux)
6 msg	smtpd_proxy_filter to unix: problem
4 msg	Again troubles with postfix and cyrus-sasl
3 msg	Exclude local host from smtpd_proxy_filter
4 msg	transport nexthop nexthop
3 msg	TLS has been selected, but TLS support is not c...
2 msg	Which documentation to read for this..
4 msg	Exchange 2003 to Postfix maildir migration
7 msg	virtual_mailbox_base & LDAP
12 msg	Enforced Outbound TLS
2 msg	postfix+maildrop error
10 msg	Outgoing IP address

Subject:	Question on Earthlink and dnsbl.sorbs.net
Group:	Postfix-users
From:	Doug
Date:	15 Jan 2008

I know you guys hate these newbie questions, but I have a hard time keeping up
with the latest in postfix. :)

Basically dnsbl.sorbs.net has been intermittently rejecting messages from
earthlink. net. I got an email thru them Friday but yesterday it began
blocking their emails again.

Now I don't know anything about the history here. Is dnsbl.sorbs.net known for
too much blocking? Should I use someone else? Or is earthlink a known spam
source?

What would be the recommended next step here? Should I use another spam
blocker? Or is there a way in postfix to just let her messages get thru?

This is the log message:

mail.info:Jan 15 09:30:32 venture postfix/smtpd[9039]: NOQUEUE: reject: RCPT
from smtpauth15.mail.atl.earthlink.net[209.86.89.75]: 554 5.7.1 Service
unavailable; Client host [209.86.89.75] blocked using dnsbl.sorbs.net;
Currently Sending Spam See: http://www.sorbs.net/lookup.shtml?209.86.89.75;
from=<her> to=<me> proto=SMTP
helo=<smtpauth15.mail.atl.earthlink.net>

And here's the applicable portion of my main.cf:

defer_transports =
disable_dns_lookups = no
strict_8bitmime = no
disable_mime_output_conversion = no
smtpd_sender_restrictions = hash:/etc/postfix/access,reject_unknown_address
smtpd_helo_required = yes
strict_rfc821_envelopes = no
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_recipient_restrictions =
reject_non_fqdn_sender
reject_non_fqdn_recipient
reject_unknown_sender_domain
reject_unknown_recipient_domain
permit_mynetworks
reject_unauth_destination
reject_unauth_pipelining
reject_invalid_hostname
reject_rbl_client bl.spamcop.net
reject_rbl_client list.dsbl.org
reject_rbl_client zen.spamhaus.org
reject_rbl_client dnsbl.sorbs.net
permit
smtp_sasl_auth_enable = no
smtpd_sasl_auth_enable = no
smtpd_use_tls = no
smtp_use_tls = no
alias_maps = hash:/etc/aliases
mailbox_size_limit = 0
message_size_limit = 10240000
myorigin = $mydomain
relay_domains = $mynetworks
smtpd_client_restrictions = permit_mynetworks, reject_rbl_client
zen.spamhaus.org, permit

Thanks!

Doug