xpkranger
RIP Georgia Theater
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Atlanta, GA
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| Webhosting Service Problem & Recommendation
A client (let's call him "Mr. H") for whom I have done some light networking support (I'm not a webhosting guy, but have a limited understanding of the basics) has GoDaddy.com as his webhost and e-mail service. A client of Mr. H (call them "bigbank.com") is getting frequent bounces when trying to send e-mail to Mr. H. GoDaddy support claims that either bigbank.com's outbound mail server is being blocked by Spamhaus.org or a link within the e-mails points to a site blacklisted by spamhaus.org. I have looked up the MX records of bigbank.com and they are not on spamhaus' lists. I am awaiting an attached example of a blocked e-mail for further inspection. I anticipate not finding any questionable links and getting stonewalled by GoDaddy. I suppose that's the long way to get around to my question:
I need a recommendation for a reliable webhost that can provide hosted exchange service as well as good web presence. They need to have minimal filtering of e-mail or at least provide access to a quarantine area (a la Postini style).
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ViviTheMage
vivi
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join:2002-10-28
Minneapolis, MN
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| You may have to have him look at an exchange service provider, they usually do it better then anyone that tries to do the 'all in one'.
Why does he need exchange? Why not just pop/imap?
What is the IP address of his shared server? That is probably what's getting blocked/blacklisted.
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twizlar
I dont think so.
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join:2003-12-24
Brantford, ON | Agreed, I would imagine his local mail server is blacklisted. |
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ViviTheMage
vivi
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Minneapolis, MN
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| said by twizlar  :Agreed, I would imagine his local mail server is blacklisted. When you get to those big guys, it happens more often then you'd think.
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xpkranger
RIP Georgia Theater
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join:2000-10-27
Atlanta, GA
clubs:
·Comcast
| reply to ViviTheMage
He doesn't have hosted exchange now, but is interested in it to be able to share his calendar with his sec'y. Possibly even a combo of hosted exchange and hosted BES for similar reasons. Anyway, he's just using POP now. I didn't know how difficult (or easy) it would be to divorce his webhosting from his e-mail. The senders at bigbank.com are receiving the bounce from the GoDaddy servers, indicating (very unspecically) that something in their e-mail indicated possible virus content or other unspecified malicious content. |
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xpkranger
RIP Georgia Theater
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join:2000-10-27
Atlanta, GA
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| reply to ViviTheMage
said by ViviTheMage :What is the IP address of his shared server? That is probably what's getting blocked/blacklisted. Sorry, not sure what you mean. Bigbank.com has their own public ip for their mx servers (not shared) and when users from Bigbank send to Mr. H, they receive bounces from GoDaddy indicating possible viruses, etc. GoDaddy uses spamhaus to filter their e-mail. Spamhaus has no record of blocking bigbanks mx record.
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xpkranger
RIP Georgia Theater
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Atlanta, GA
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| reply to ViviTheMage
So you're saying that there is another public mx server from bigbank.com that I don't see because it all comes technically from their listed MX server? FWIW, the senders are in the home office.
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ViviTheMage
vivi
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Minneapolis, MN
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| reply to xpkranger
Sounds a bit messy...basically, where is Mr. H's email server? What is that ip address? If it's getting spamhouse filtered, the clients bounceback would say that if I recall.
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xpkranger
RIP Georgia Theater
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join:2000-10-27
Atlanta, GA
clubs:
·Comcast
| said by ViviTheMage :Sounds a bit messy...basically, where is Mr. H's email server? What is that ip address? If it's getting spamhouse filtered, the clients bounceback would say that if I recall. Mr. H is sending and receiving from GoDaddy addresses as follows:
So, I don't Mr. H is being filtered, he can send and receive just fine, but inbound to him is the problem (but only for bigbank.com).
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ViviTheMage
vivi
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join:2002-10-28
Minneapolis, MN
clubs: | reply to xpkranger
It is on one blacklist.
»www.mxtoolbox.com/blacklists.aspx
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xpkranger
RIP Georgia Theater
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join:2000-10-27
Atlanta, GA
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·Comcast
| Still confused (seems to be my normal state lately). The sender joeshmoe@bigbank.com is receiving bounce messages directly from GoDaddy when they attempt to send to anyname@misterH.com. GoDaddy wouldn't blacklist their own servers.
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ViviTheMage
vivi
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Minneapolis, MN
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| reply to xpkranger
haha, OH! I mis-interpreted. If godaddy can't do anything about blocking themselves...you need to move to a new host!
You are 100% sure that the user sending emails is inputting the correct email address?
Also, any chance he could forward you a bounceback, so we can see exactly what it's saying?
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xpkranger
RIP Georgia Theater
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join:2000-10-27
Atlanta, GA
clubs:
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| reply to xpkranger
The plot thickens. Now here is something that is starting to make a bit more sense. I got a copy of the original bounce and it looks to my non-exchange server self that it never even leaves bigbank.com's SMTP server, perhaps due to GoDaddy being blacklisted as ViviTheMage indicated.
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xpkranger
RIP Georgia Theater
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join:2000-10-27
Atlanta, GA
clubs: | I have opened a trouble ticket with bigbank.com. |
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ViviTheMage
vivi
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join:2002-10-28
Minneapolis, MN
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| reply to xpkranger
I sent an email to wrh@misterH.com
and it did not bounceback, so yeah ... I think it's safe to assume you are being blacklisted somehow.
If you go into that URL I linked earlier on, you can enter your SMTP server IP and it'll say where you are blacklisted from, both your xx.11 and xx.10 are blacklisted at the same place, I am curious if the whole /24 is.
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jester121
Premium
join:2003-08-09
Lake Zurich, IL
 ·surpasshosting
 ·ViaTalk
| said by ViviTheMage :I sent an email to wrh@misterH.com You know the whole "misterH" reference is just for conversation sake, right???? OP's client isn't really "misterh.com".... 
OP, clearly Godaddy is seeing the bank's e-mail as somehow spammy (the 554 error message). I'd guess that a lot of banks have problems with this due to all the bank phishing stuff out there; any e-mail claiming to be from a bank gets over scrutinized.
If you're interested in Exchange + BES, check out the blackberry forums, like crackberry.com or whatever else is out there. They usually have sponsored vendors who will host Exchange + BES for a monthly fee. |
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ViviTheMage
vivi
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join:2002-10-28
Minneapolis, MN
clubs: | reply to xpkranger
I never got a bounceback :P. It went ... somewhere.
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xpkranger
RIP Georgia Theater
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join:2000-10-27
Atlanta, GA
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·Comcast
| reply to jester121
Thanks. I would think you must be right, except that when I run bigbank's MX server record against the e-mail blacklist checker, it doesn't appear to be blocked by any of the listed organizations. I suspect GoDaddy has some internal list, they are blocking from, OR, as they stated in their support request response to Mr. H, that there could be something in the bigbank.com sender's e-mail that links to a blacklisted address. That would make sense, because not all of the bigbank.com e-mails get blocked. I'm trying to work with bigbank.com's support department to get them to forward an e-mail that was bounced (not just the bounce message) to me so that I can inspect it for any potential links to blacklisted IP's.
As for the error message, that's where my knowledge ended. I didn't know if the 554 error was generated by the senders SMTP server because it wouldn't try to send or because it received rejection message from GoDaddy. I think you've cleared it up, that it is in fact generated by the remote (GoDaddy) server in response to the attempted sending of the e-mail.
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xpkranger
RIP Georgia Theater
Premium
join:2000-10-27
Atlanta, GA
clubs:
·Comcast
| reply to jester121
Thanks, I'm familiar with crackberry (from reading up on the new 9630) and I'll go look for an Exchange + BES service over there.
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jester121
Premium
join:2003-08-09
Lake Zurich, IL
·surpasshosting
·ViaTalk
| reply to xpkranger
Yep, the 5.1.0 is Bigbank's internal message, the 554 is what it received from GoDaddy. Also keep in mind a third type of spam filtering, content based (Bayes) filtering. It looks for "spammy" phrases and assigns a score, and messages that score high enough may be junkfiled, or if it's even higher, outright rejected before the transmission completes.
Unless you tell it to, Exchange doesn't log each individual part of the SMTP transaction, it just throws the error message at the end. |
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