Categories: Email Delivery Questions :

MX Logic blocking delivery from Postini

Showing 1-18 of 18 messages
MX Logic blocking delivery from Postini PatF 3/16/11 10:36 AM
We attempted to send emails to a domain which uses MXLogic to filter its email. All emails were blocked. We contacted the recipients at the domain and they contacted their IT support. Their support came back with the following:

"I have looked over this issue and the reason these emails are not being delivered to your inbox is related to spam reports. These reports are not performed by us nor under our control. I have looked over the blocked emails at MXLogic (our spam filter provider for Exchange) and the email address in question is in fact getting blocked at the spam blocking provider MXLogic. The reason this is occurring is that the IP address belonging to the Domain ...deleted... of 64.18.2.165 is found to be on two spam RBL lists. Once again since this is not in our control there is little that we can do to prevent this from getting denied delivery. You should reach out to the persons in charge of that domain and inform them that their IP address is listed on a spam list and is causing the issues of delivery.You can provide them the link below for further info.  http://mxtoolbox.com/SuperTool.aspx?action=blacklist%3a64.18.2.165 "

It appears to me that MXLogic has blacklisted one of the primary IP's Postini uses to deliver email. Help!
Re: MX Logic blocking delivery from Postini FrankM Forums-TC 3/16/11 8:41 PM
Are you actually using Postini for outbound?
Re: MX Logic blocking delivery from Postini PatF 3/16/11 9:04 PM
Frank,

Yes. It was the easiest way to get consistent outbound delivery given our Internet setup.
Re: MX Logic blocking delivery from Postini FrankM Forums-TC 3/16/11 9:21 PM
What method, Postini Private DNS or Smarthost?
Re: MX Logic blocking delivery from Postini PatF 3/17/11 7:20 AM
Smarthost.
Re: MX Logic blocking delivery from Postini FrankM Forums-TC 3/17/11 8:48 AM
Try switching over to using the Postini Private DNS or stop using outbound, until Postini can clear up the IP block from the goofs over at Backscatter and Sorbs. In either case, make sure you have Postini listed in your published SPF record as, include:spf.postini.com. Have you submitted a support request to Postini?
Re: MX Logic blocking delivery from Postini PatF 3/17/11 1:47 PM
Frank,

Thanks for that. We will give it a try.

I had not submitted a support request. I thought it might be better to post in the forum and let everyone else know that there might be a problem. I also thought it might get Postini's attention this way.
Re: MX Logic blocking delivery from Postini FrankM Forums-TC 3/17/11 4:00 PM
It's always a good idea to submit support tickets, as they will then be recorded for trends and other criteria. This is a user support forum and is not regularly viewed by support staff, other than by forum advisers that TC's help alert for issues.
Re: MX Logic blocking delivery from Postini NRaper 3/23/11 12:30 PM
Pat - You're not alone!!!!! I have a TON of information on the subject. I've been fighting this for days...
 
Let me read up.
Re: MX Logic blocking delivery from Postini NRaper 3/23/11 12:33 PM
Sorry. Just now caught up on this thread. I've been fighting this exact same scenario for days now... MX Logic finally admitted they made a "global update" that may have caused this issue... We were using Smarthost, now circumventing the problem by sending directly out. Undesirable, but it works...
 
FTR - MX Logic was absolutely *no* help whatsoever in the 2+ (accumulative) hours I was on the phone with them. Postini admits they're familiar with the problem but not a ton they can do... I hope MX Logic realizes what this is doing to their PR. I'm ready to verbally tear them a new one at any future opportunity...
Re: MX Logic blocking delivery from Postini gtinetworks 3/19/12 10:45 AM

I use Postini for incoming only.  Outgoing mail is handled by SMTP on my corporate mail server but I too am having the same problem.  E-mail to clients that have worked for years is now getting blocked.  It doesn't matter if it is a new message or a reply.  My mail server is as clean as a whistle.  It is behind a firewall and only has 20 users.  I am not on ANY blacklists, however I cannot send critical business e-mail.  I cannot send to AT&T for example and it is impossible to get an end-user at ATT Corporate to figure out who is in charge of their mail server and there is no information in the bounce that would help with getting unblocked.  This is ridiculous!


Just found this on the McAfee Saas web site in regards to blocked messages: 

Forward the message with the original internet headers to falsepositives@mcafeesaas.com.

Did as suggested and that message got bounced too!  What a shock......

Anyone have a contact number for these people?

Thanks,

Kevin

Re: MX Logic blocking delivery from Postini FrankM Forums-TC 3/19/12 12:04 PM
What is the bounced error message?  Also make sure you have a published SPF TXT record in DNS. 
Re: MX Logic blocking delivery from Postini gtinetworks 3/20/12 8:40 AM
Hi Frank,

Here is the most recent one:



I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<pam.w...@illinois.gov>: host smtp01.illinois.gov[163.191.142.163] said: 554
    Transaction Failed Spam Message not queued. (in reply to end of DATA
    command)

Re: MX Logic blocking delivery from Postini gtinetworks 3/20/12 8:48 AM

I do not currently have a SPF TXT record.

Can I specify The Postini servers by domain, psmtp.com or should I specify each server by IP address?  What syntax to you recommend I use?

Thanks for your help!

Kevin
Re: MX Logic blocking delivery from Postini FrankM Forums-TC 3/20/12 9:07 AM
Well certainly without a published SPF record, you need to at least have your own server IP listed and any other mail servers that send SMTP relay in your behalf. For Postini, use the following on your SPF TXT record, include:spf.postini.com. We always add Postini, regardless if Postini outbound relay is used. 
Re: MX Logic blocking delivery from Postini gtinetworks 3/20/12 9:57 AM

This is the txt record from my DNS.  Is this what I'm shooting for?

Thanks.


xxxxxxx.net.    IN    TXT    "v=spf1 ip4:'ip-of-mail-server' include:spf.postini.com ~all"
Re: MX Logic blocking delivery from Postini gtinetworks 3/20/12 12:14 PM

Could this be the problem?

LISTED51msDRBL vote node gremlin.ru

DNS MX Record (Mail Server) gtec.net.s6b1.psmtp.com. resolves to a blacklisted IP 64.18.5.13

DNS MX Record (Mail Server) gtec.net.s6b2.psmtp.com. resolves to a blacklisted IP 64.18.5.14
LISTED63msDRBL work node gremlin.ru

DNS MX Record (Mail Server) gtec.net.s6b1.psmtp.com. resolves to a blacklisted IP 64.18.5.13

DNS MX Record (Mail Server) gtec.net.s6b2.psmtp.com. resolves to a blacklisted IP 64.18.5.14

This is from http://domain-blacklist.e-dns.org/gtec.net



Re: MX Logic blocking delivery from Postini FrankM Forums-TC 3/20/12 12:29 PM
Maybe, however that was no evident in the error message. The SPF string should be fine.