How to deal with hotmail spam filter

Few months ago i faced with hotmail spam filter, every time when my host tried to send email to any hotmail address i saw next error in log file:

550 SC-001 (SNT0-MC2-F18) Unfortunately, messages from IP.AD.DR.ESS weren’t sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to

I configured correct PTR, SPF, DKIM records, sent email to hotmail support two times, fill and submit big strange long form here, but anyway every time when i tried to sent message i got “550 SC-001”.
Hotmail support said next:

Hello Ivan,

I do apologize if I am unable to provide any details about this situation since we do not have the liberty to discuss the nature of the block.

At this point, I would suggest that you review and comply with Windows Live Hotmail’s technical standards. This information can be found at

We regret that we are unable to provide any additional information or assistance at this time.

Yeah, brilliant, thanks for help man. I was tired of the situation, so i just configured exim to send all emails for and thru gmail account.

On this host i had debian squeeze and exim4 configured to send emails directly, i made next modifications in config files, first i created domainlist for “sick” domains:

$ echo 'domainlist route_thru_smarthost = " : : : :"' > \

Modified default dnslookup router and added new router for hotmail in file /etc/exim4/conf.d/router/200_exim4-config_primary into DCconfig_internet block:

debug_print = "R: dnslookup for $local_part@$domain"
driver = dnslookup
domains = ! +local_domains : ! +route_thru_smarthost
transport = remote_smtp
same_domain_copy_routing = yes
# ignore private rfc1918 and APIPA addresses
ignore_target_hosts = : : :\ : : :\
debug_print = "R: hotmail_router for $local_part@$domain"
driver = manualroute
domains = ! +local_domains : +route_thru_smarthost
transport = remote_smtp_smarthost
route_list = * DCsmarthost byname
host_find_failed = defer
same_domain_copy_routing = yes

Last step – create account into google apps and add credentials into /etc/exim4/passwd.client

$ echo '*' >> /etc/exim4/passwd.client

Regenerate template and update config:

$ update-exim4.conf.template -r
$ update-exim4.conf

After that i checked routing:

$ exim4 -bt
R: hotmail_router for
router = hotmail_router, transport = remote_smtp_smarthost
host []  port=587
host []  port=587

And sent test email:

$ echo subj|mail -s "burn in hell"
$ grep /var/log/exim4/mainlog
2012-03-34 09:11:09 1SAwmJ-0006sf-56 =>
R=hotmail_router T=remote_smtp_smarthost []
X=TLS1.0:RSA_ARCFOUR_SHA1:16 DN="C=US,ST=California,L=Mountain
View,O=Google Inc,"


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