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My mail is blocked by http://www.sorbs.net

For some reason my mail is blocked by http://www.sorbs.net. i have requested them to remove but it is not working yet. it has been more than 48 hours. of course i have tried to contact but not response.

my mail server is exchange 2003 and it is secured and open replay. has anyone dealt with this company before? please advise.
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hiepho
Asked:
hiepho
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4 Solutions
 
Irwin SantosComputer Integration SpecialistCommented:
do you have REVERSE DNS setup?
also, when you mentioned OPEN relay.. like FULLY OPEN or only allowing properly authenticated access to relay?

as for that company.. you are at the mercy of that company
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hiephoAuthor Commented:
reverse DNS is fine. authenticated access to replay only. the server is pretty secured.

how did my mail server end up on their list is what i wonder? you mean there is no way i can ask them to delist it.

there are couple important domain names we send mail daily and now this happens. how can i solve the problem without going through this company till it is resolved or i hear back from them.
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Irwin SantosComputer Integration SpecialistCommented:
is this the only domain that you have the problem?
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hiephoAuthor Commented:
there are two domain names that i have problem sending mail to.
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hiephoAuthor Commented:
i followed this article to add connector to allow my server sending mail to blocked domains but it doesn't work.
http://www.amset.info/exchange/smtp-connector.asp
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Exchange_AdminCommented:
Have you tried speaking with the admins at the domains you are trying to send to. See if they can add you to their whitelist.
Other than that you will have to wait until they straighten it out.
Have you gone to the Sorbs webpage, clicked "Database Check" and enter your info to see if it will tell you why you are listed?

You may have to go back to the dark ages until this is resolved. Remember the office machine called FAX? You may just have to FAX documents to these 2 companies until it is resolved.
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hiephoAuthor Commented:
i did the check and my ip address is listed there. This is the message "Currently active and flagged to be published in DNS".

who is Sorbs? why are they doing this?

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SembeeCommented:
Why didn't the SMTP Connector work?
Did it route email through your ISP? Message Tracking will confirm whether that is the case or not.

Sorbs is one of the vigilante blacklists that there are on the internet. Did you read their web site? As with most of the blacklists, it is block first, ask questions later. Once you get on one, it is very difficult to get off, as you are then flagged as suspect.

Have you tested your domain?

Simon.
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hiephoAuthor Commented:
not sure about SMTP connector. I followed the instruction your article and tried to send out mail after adding the connector but still working rejecting mail from these two domain names.

what do you mean testing my domain? what do i test and how to test it? i have sent mail to hotmail and yahoo and it is fine. so far mails are being sent they are ok except these two domain names that i have problem with because they are blocked by Sorbs.
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SembeeCommented:
The SMTP Connector can be configured to route email via your ISP or send the message directly. You need to check which you have configured.

If it is via your ISP and you are getting the message, then it sounds like your domain has been blacklisted instead of the IP address.
If it is direct, then you haven't achieved anything. You need to route via the ISP - otherwise you are wasting your time.

Which database are you on at sorbs? What reason did it give for listing?

Simon.
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hiephoAuthor Commented:
SMTP connector: i selected "Forward all mail through this connector to the following smart hosts" > here i entered the blocked domain name. i would guess this is direct connector to that domain, right?

if i go through my ISP, is this where i enter my ISP address?

i can't tell you which database it is on because i am not sure where to look it up. this is what i got when i do check database ""Currently active and flagged to be published in DNS"

i don't know what reason the listed my ip address either because i can't seem to find where the reason is.
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Irwin SantosComputer Integration SpecialistCommented:
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SembeeCommented:
You misunderstood my instructions.
Where it says "Forward all mail through this connection to the following smart hosts" you need to enter your ISPs outbound email server. Not your IP address, not the domain name of the problem domains. The problem domains are listed in the address space tab.

The server to use will be listed on the ISPs web site somewhere. Look for what they tell Outlook Express users to use for SMTP email. You may also have to authenticate - my instructions state how to configure that if that is the case.

Simon.
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hiephoAuthor Commented:
OK. i entered my domain name in "Forward..."
under "Address space" > i entered the blocked domain names.

at first it did not work but then i checked "Allow messages to be replayed to these domains" and it worked.

You mentioned in the article that i should not check this box because i run the risk of Open Replay. since i checked that, am i at risk or it's ok for whatever addresses i have entered in "Address Space"
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SembeeCommented:
No you still don't have it correct.
The allow messages to be relayed to these domains should not be enabled.
On the general tab, under the smart host you need to be entering your ISPs SMTP Server. NOT your domain, NOT the domain of the other server or any other server. JUST your ISPs domain.

Simon.
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hiephoAuthor Commented:
I need to call my ISP for that.

this is additonal information from SORBS for their blocking my ip

"Dynamic/Generic IP/rDNS address, use your ISPs mail server or get rDNS set to indicate static assignment."
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flyguybobCommented:
Send a message to an address that will accept your mail.  Look in the message headers for the server IP sending the message.  You should recognize the server name and IP address that is yours. Go to www.dnsstuff.com and enter that IP address in the Reverse DNS Lookup (middle set of boxes, second box down).  If that retuns an IP to name resolution, then you have a reverse DNS, or PTR record configured so that the outside world can see it.  Your ISP generally has to setup this record for you.
**If it is flagged to be published in their DNS, as noted earlier, you should still double-check it with a 3rd party site, such as dnsstuff.com

You can also double-check your MX record and the A record (name to IP lookup) while you are at it.

If someone got your netblock listed, which can be possible, the netblock owner (your upline ISP) will need to request the netblock be delisted.
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flyguybobCommented:
...and, in some cases, there are IP addresses being blacklisted because they are part of a DSL provider, or are idendified as a range of dynamic IP addresses.  Again, your ISP would need to assist in the remediation...or allow you to relay your mail through their server.
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SembeeCommented:
The IP address is flagged as dynamic. As Bob has already said, you will need to speak to the ISP to get that resolved. You cannot get the IP address removed from those addresses yourself.

Therefore you need to get the SMTP Connector to work, as that will be the only solution. If Sorbs has flagged your address as dynamic, there will be others who have done so - so the connector will be used for more domains.

Simon.
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Irwin SantosComputer Integration SpecialistCommented:
Here is my proposal...split points
irwinpks 1st comment
exchange Admin 1st comment
flybob 1st comment
sembee 2nd comment
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flyguybobCommented:
Agreed...there was a lot of information in that thread and it was good information.  Many mail admins are now facing the dynamic IP issues.
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