Email Security

Dear All,  after upgrade to the latest version i received may alert about network as below...  The updater has been unable to communicate with the update server for at least 1h. Unable to connect to the Cisco Aggregator Server.Details: (6, 'Could not...

Hi all,we set up Spoof Protection as described here: https://www.cisco.com/c/dam/en/us/products/collateral/security/cloud-email-security/guide-c07-740417.pdf Unfortunately a user received a message from himself.From: firstname.lastname@domain.tld [ma...

Hello dear community, We would like to check if it is possible to check the MX registry for the senders. I know that the ESAs have an option to check sender IP, but as far as I know that verification only validates if the sender IP  have a domain ass...

any external user (e.g. user@hotmail.com...) receive bounced email when sending large email size email to our domain stating that " your message was not delivered to anyone because it is too large. the limit is 10 MB , your message is 14 MB" esa.doma...

Hi, we recently found a lot of blocked connection to our Cisco C100V - Cloud Email Security Appliance due to TLS error.  Any help is greatly appreciated. Many thanks!! This is my first time to post question in this community. Sorry that if I posted i...

Good Morning, In the last month, we upgraded to ESA Cloud ver. 12. Since that time, we have noticed that IMS appears to be lots more aggressive in its scanning and valid messages that were received before are now being dropped as "Spam Positive". Thi...

Hi All,We have LDAP configuraed for ESA to AD authentication. We need to have more secure method for communnition and hence need to configure LDAPS. can anyone clarify if ESA supports LDAPS and if any documention is available for this configuration. ...

Hello Everyone, I have an ESA C370 in 10.0.0-203 with 8GB memory and I need to upgrade it to 11.0.0-105 and an SMA M380 in 10.0.0-055 and I have to upgrade it version 11.1.i want to know about the upgrade path for the ESA and the SMA ?? Please help

Hello Support, Good day everyone and hopes my mail meets you well. I wish to know if there is anyone that just enabled this security features on the ESA Ironport because I am planning to initiate it on my ESAs in a cluster but not sure if it might af...

We have a Senders Group that functions as our internal relay. I have over 100 IPs I need to add to the relay. Is there a way I can import these IPs and their associated "description"? None of these IPs are in sequence, so I can't just add a 'range' t...

Hi, We are having issue with one sender. All emails are usually delivered with no delay but from time to time the email would be delayed for few hours. I'm stuck and i don't know how to troubleshoot this issue. Client says it's on our side but recent...

Hello,   When using the CRES for email encryption, the decrypted email appears in a web browser window with this URL https://res.cisco.com Does this mean the email is stored within Cisco's datacenter? Any option to keep the decrypted email in house? ...

Hello,   The following vulnerability was confirmed by the security scanner: Multiple Vulnerabilities have been reported in OpenSSH v7.3 and earlier. These vulnerabilities if exploited will allow code execution, privilege escalation, information discl...

Hello,I have a problem when I am trying to create a message filter on ESA and the string contains /.I tried to use \ before /, but doesn't work. If not body-contains('^class: message / attachment'){drop();}.Thank you.