Solved

Cisco Ironport - Long delivery time for messages manually released

Posted on 2016-10-11
4
15 Views
Last Modified: 2016-11-05
Model - Cisco Ironport C370
OS - 9.7.2-047

Dear Experts

Please can someone assist me.

On my Cisco Ironport I quarantine all emails containing zip files due to company policy.

Recently when I manually release an email it takes forever to come through. Almost 90 mins. This never used to happen before.

Any ideas?
0
Comment
Question by:TTAF4
  • 2
4 Comments
 

Expert Comment

by:John Sam George
ID: 41838030
Check the Receive connector if you are using Exchange first. Then check the IIS in your CAS servers.
1
 
LVL 17

Expert Comment

by:Malmensa
ID: 41839431
Could be greylisting in use somewhere. This is an antispam technique.

Basically, when email is sent from a new user, the SMPT server responds with a "temporary error", and makes the sender retry. After a delay, (which could be 90 mins), it accepts the email, and in future, applies no delay. This is effective, since spammers nearly always give up on the first attempt, while legitimate email nearly always makes multiple attempts.

More here:
https://en.wikipedia.org/wiki/Greylisting
1
 

Accepted Solution

by:
TTAF4 earned 0 total points
ID: 41867874
Turns out that this was an issue on the ironport itself and could only be resolved by Cisco
0
 

Author Closing Comment

by:TTAF4
ID: 41875255
I had to log a call with Cisco. Only they could resolve this issue.
0

Featured Post

VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Quality of Service (QoS) options are nearly endless when it comes to networks today. This article is merely one example of how it can be handled in a hub-n-spoke design using a 3-tier configuration.
Concerto Cloud Services, a provider of fully managed private, public and hybrid cloud solutions, announced today it was named to the 20 Coolest Cloud Infrastructure Vendors Of The 2017 Cloud  (http://www.concertocloud.com/about/in-the-news/2017/02/0…
Both in life and business – not all partnerships are created equal. As the demand for cloud services increases, so do the number of self-proclaimed cloud partners. Asking the right questions up front in the partnership, will enable both parties …
Both in life and business – not all partnerships are created equal. Spend 30 short minutes with us to learn:   • Key questions to ask when considering a partnership to accelerate your business into the cloud • Pitfalls and mistakes other partners…

785 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