Email Security

We have an email server that shows large spikes in email volume on sporadic days on senderbase.org.  The spike is typically short lived (1 day).  We have run wireshark logging on the server, sysmon tracing of inbound and outbound email port network c...

Iron port is dropping the no_reply message from outside. Need help to allow it to pass.

I have an issue today because Ironport (Relay)check the address book to forward emails from any system within Domino.All queries for users @domain.com are provided and search by Domino.Actual scenarioeCRM  - Ironport  - Notes - Google I want to remov...

Hi,I was wondering if i can create a policy to check Driver's licence in an e-mail and send that with mail as Bcc copy and deliver it to intended recipients in Ironport.There's no smart identifier for Driving licence. I can create it with a DLP polic...

We have experienced numerous issues with email recipients being able to open encrypted email HTML file attachments.  Also having issue once an encrypted email is open to be able to then open attachments to that email (excel, pdf).Has anyone had simil...

Just wondering what people do when they have e-mails detected as SPAM or Suspected SPAM from spam houses like Mail Chimp.  Is it effective to just report the false positive to ham@access.ironport.com?I started down the path of adding the sender to a ...

Hello, A VP of Marketing asked why an Outlook calendar invite he sent out went securely.  Upon futher investigation it hit our outgoing content filter rule ABA Numbers.  The system thought there was an ABA number in the hidden header of the message a...

Hello,is it possible to post the disclaimer template at the top of the message? for example: (Warning-text from the Ironport at the top) Warning: this email contains a virus  Spam-text  

Hi,after update  two C680 Cluster from 8.5.6-092 to 9.1.0.-032,  I adjusted the disks quota as Cisco created a new service "Miscellaneous files".I increase the Spam quarantine disk quota on both, but on the second C680 , after the commit , appeared t...

We have recently had users that have tried sending encrypted email receive an undeliverable email like the one below.    We cannot figure out what the issue is with our Ironport.  Is this with our IEA, ESA or SMA?  Any help with resolving this issue ...

The CRES Account Administration Guide doesn't go into a lot of detail about the "Enabling Sender Registration" feature. Typically, a user must receive a CRES-encrypted envelope in order to register. This feature seems to negate having to receive an e...

Hello Everyone, We have an ESA Cisco C100V. Can someone tell us how security certificates play a role on the device? We have a security certificate on our Exchange server that handles the TLS for SMTP communications. Should there be certificates on t...

I am testing ESAv (COOV demo image) and the directions say to use qcow2 format when installing for KVM.  All the images appear to be VMDK only.  So I used qemu-img to convert it to qcow format, but when it boots it gets so far and then complains it c...