Unfortunately, my server has been used to send spam from 13.08.
Now my IP is blocked my many MTA and we are stuck as it causes huge problem to our business.
Can anyone help me to take the necessary steps to prevent this from happening?
I also need to document what steps i've taken before asking for white listing from many DNSBL.
@Mustafa, any idea what i can do?
I've changed the real IP with fictive one.
Rejected messages of MTA:
Remote_host_said:_550_DNSBL-rejected_zen.dnsbl
Remote host said: 554 5.7.1 Service unavailable; Client host [83.111.111.115] blocked using zen.spamhaus.org;
http://www.spamhaus.org/query/bl?ip=83.111.111.115Spamhaus has a CBL block on my IP
From cbl.abuse.net:
IP Address 83.111.111.115 is listed in the CBL. It appears to be infected with a spam sending trojan, proxy or some other form of botnet.
It was last detected at 2014-08-16 22:00 GMT (+/- 30 minutes), approximately 1 days, 12 hours, 29 minutes ago.
Update: looks like fake sender email addresses are being use (i got many emails in the mail queue!)
eturn-Path: <139byhtm@dell.com>
Received: (qmail 15451 invoked from network); 16 Aug 2014 22:40:24 -0000
Received: from unknown (HELO mail.server.com) (127.0.0.1)
by mail.server.com with SMTP; 16 Aug 2014 22:40:24 -0000
Received: from 210.244.237.168 by (HELLO 111.111.111.111 ) (111.111.111.111) by dbzwmhziqmvouumyojhsiuj@yahoo.com.tw with cfxlnwenyl login by AOL 7.0 for Windows US sub 146 SMTP ; Sun, 17 Aug 2014 00:23:06 +0200
Message-ID: <okqgpfweko.brnlgwdwbl831kiky@avon.com>
From: "???s??" <140ujky@nissan.com>
To: lucychang777@kcg.seed.net
Subject: ???G?
???DVD?s?n??
Is there no check against fake email address/sender on Kloxo-MR?
RIGHT NOW HUNDREDS OF CUSTOMER EMAILS ARE IN THE MAIL QUEUE WITHOUT BEING DELIVERED.
Also, i'm not sure if i should request whitelisting on various places before taking necessary preventive steps to avoid such to happen in the future.
What about Kloxo's support for external mail server? Using a non-Kloxo MTA might solve this kind of issue for me.
Any help is highly appreciated!