Solved

Emails Are Getting Rejected by Bounce Verification We Use IronPort

Posted on 2008-06-11
3
7,081 Views
Last Modified: 2008-06-19
I have an issue sending email to one domain. We get the message(s) depending on if we disable Bounce Verification on our IronPort or not.

Before Disabling Bounce Verification on Our End
Your message did not reach some or all of the intended recipients.

      Subject:            test2
      Sent:                 11/06/2008 17:01

The following recipient(s) could not be reached:

      user@recipient.com on 11/06/2008 17:01
            The e-mail system was unable to deliver the message, but did not report a specific reason.  Check the address and try again.  If it still fails, contact your system administrator.
            < mail-ip-in.mydomain.co.uk #5.0.0 smtp; 5.1.0 - Unknown address error 550-'Verification failed for <user@mydomain.co.uk>\nPrevious (cached) callout verification failure\nSender verify failed' (delivery attempts: 0)>


When I disable Bounce Verification, we get:

Your message did not reach some or all of the intended recipients.

      Subject:            test2
      Sent:                 11/06/2008 17:01

The following recipient(s) could not be reached:

      user@recipient.com on 11/06/2008 17:01
            The e-mail system was unable to deliver the message, but did not report a specific reason.  Check the address and try again.  If it still fails, contact your system administrator.
            < mail-ip-in.mydomain.co.uk #5.0.0 smtp; 5.1.0 - Unknown address error 550-'Verification failed for <user@mydomain.co.uk>\nPrevious (cached) callout verification failure\nSender verify failed' (delivery attempts: 0)>




Any ideas?
0
Comment
Question by:thesurg3on
3 Comments
 
LVL 28

Accepted Solution

by:
peakpeak earned 500 total points
Comment Utility
You should try sending a test email through Telnet to further investigate:
http://www.msexchange.org/tutorials/Telnet-Exchange2003-POP3-SMTP-Troubleshooting.html

0
 

Author Comment

by:thesurg3on
Comment Utility
telnet tested. it was bounce verification issue.
0
 

Expert Comment

by:mpiib
Comment Utility
It looks as it is a bounce verification issue together with sender base verification. If bounce verfication is in effect, all e-mail that is sent through the ironport towards the outside is tagged in the FROM envelope.
That is, the envelope address changes from "test@my.domain" to something like "prvs=test=26654df9b@my.domain". Now if the remote site uses some type of SMTP verification that is offered by "my.domain", it will ask "my.domain" for the existence of user "prvs=test=26654df9b" instead of user "test". Hence, delivery will fail.
0

Featured Post

Find Ransomware Secrets With All-Source Analysis

Ransomware has become a major concern for organizations; its prevalence has grown due to past successes achieved by threat actors. While each ransomware variant is different, we’ve seen some common tactics and trends used among the authors of the malware.

Join & Write a Comment

Suggested Solutions

Easy CSR creation in Exchange 2007,2010 and 2013
Following basic email etiquette rules will help you write a professional email and achieve a good, lasting impression with your contacts.
In this video we show how to create a Shared Mailbox in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Recipients >> Sha…
how to add IIS SMTP to handle application/Scanner relays into office 365.

763 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now