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Spam block list

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Last Modified: 2013-12-09
My Firewall wan port IP is listed in spam blocklist, do i need to worry.

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VINOD MORELinux System Analyst

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Commented:
I used http://www.mxtoolbox.com
and i see IP listed in 4 spam blocking sites

Now what next...
VINOD MORELinux System Analyst

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Commented:
Have I posted this correct Zones?
VINOD MORELinux System Analyst

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Commented:
OK

Any comments
VINOD MORELinux System Analyst

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Commented:
Anybody??
Gabriel OrozcoSolution Architect
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VINOD MORELinux System Analyst

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Commented:
Our mailserver is at Dubai, and we are in India. Postfix is our mailserver and we have POP3 accounts.

BTW
I have heard that to resolve this issue I have configured firewalls wan port ip with a reverse DNS entry.
So what should be reverse DNS entry??

What is email forwarding? Details pls?
VINOD MORELinux System Analyst

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Commented:
Any more comments.
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VINOD MORELinux System Analyst

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Commented:
Ok here is there whole story

We don't have mail server at our location (Mumbai, India), our mail server is at Dubai and we have configured POP3 accounts on it. Mail server is Postfix.

We just have Internet Leased Line with Firewall in between.
So firewall's wan port IP which is x.x.x.x get listed in Spam blocking sites.
If IP gets listed in these sites outgoing mails are blocked.

We don't have any domain or mail server at our location, we are just on work-group  environment.

So I want to resolve this issue of IP getting listed in Spam blocking sites.

@ NotLogical
IP has been provided by ISP, we have Internet Leased Line.
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VINOD MORELinux System Analyst

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Commented:
@ NotLogical

I guess IP was not blacklisted previously, Also as you say even if I ask for new IP that might too get listed in few days or weeks time. So that won't be permanent solution. ISP may not help in fixing blacklisting cause they just take care of link up or down.

Do you think any internal system infected virus/worm/trojan/botnet would be causing sending spam mails so IP getting listed. For info we use Symantec Endpoint Protection 11.


Ok IP is 114.143.226.235
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Gabriel OrozcoSolution Architect
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VINOD MORELinux System Analyst

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Commented:
@ NotLogical

Server doesn't look to be open-relay SMTP server.
Tested on website www.mxtoolbox.com, check image attached.

No idea about server-side Postfix issues, cause server is not managed by myself.

About adding rule i use Cyberoam C25i UTM box.
Any ideas how to configure in it. Would be great help.

About Reverse DNS
You are saying that its not required in my case to resolve the issue.

@ Redimido
Leased line are problems??
But this is common type of internet connectivity in India for corporates.
I don't think there's any alternative to this.

We don't have any local postfix server or mail server or domain, we are on plain work-group environment.

My previous ISP configured mail.tajtv.com as an Reverse DNS entry for me.


This getting quite tricky. Huuhh





VINOD MORELinux System Analyst

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Commented:
Image attached
SMTP-diag.JPG
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Gabriel OrozcoSolution Architect
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VINOD MORELinux System Analyst

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Now experts finally what do you suggest me to do to resolve the issue?
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Gabriel OrozcoSolution Architect
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