Important: Migrate from Secure Email Virtual C100V Models to Avoid McAfee-Related Issues Dear Valued Customer, We are reaching out to ensure your Cisco Secure Email environment continues to operate at optimal performance and reliability. As worklo...
Forum Posts
Hi!Im trying to upgrade ESA from 15.0.0-104 to 19.0.4-016 which i have understood shouldn't be an issue. However, when i try to upgrade either from GUI using "System Upgrade", i get the error "Error - Failure downloading upgrade list., and if i try t...
I have onpremises ESA and cloud CES. now, each has their own quarantine notifications.ie., users will receive 2 quarainte notifications.Can we integrate onpremises ESA twith CES SMA or viceversa? - so I will have only one quaraine
Hello,Recently there has been a spike of unsolicited calendar invites emails from Google getting to users' inboxes. We are trying to come up with a way to defend against these but aside from blocking or quarantining any/all calendar invites it is pro...
We would like to request clarification regarding the impact of tenant decommissioning after the expiration of the Cisco Email Security (CES) license.Specifically, we would like to understand what happens once the tenant is dismantled after the licens...
Hi,I have a virtual C300V that is forwarding traffic, I see in the mail_logs a message likeThu Mar 5 09:45:03 2026 Info: Start MID 19056304 ICID 46415102When I send a connection-details API request to the appliance with these MID and and ICID, the re...
Hi,I’m trying to understand the exact behavior of the header **X-ESA-CF-TLS-Mandatory** on an ESA and would appreciate clarification from Cisco or anyone with deep ESA experience.What I am trying to achieveWe externally add the header:X-ESA-CF-TLS-Ma...
Hello. We have the same problem/question. Please add support to ACME.Thanks!Microsoft needs trusted CA certificate:TLS Certificates in Exchange Hybrid - Common Issues & How to Fix them | Microsoft Community Hub
Hello, I'm going to create a CSR for the TLS encryption functionality. but MX record does not match the hostname of system or the listener interface. 1- Must CNAME and system hostname and listener interface hostname being match with the MX record ?. ...
Hello, I have enabled the access to the End User Spam Quarantine with this opton: "Enable login without credentials for quarantine access" User should access their Spam Quarnatine with link included in Spam Notification. LDAP Authentication is also...
Hello Netpros, I’m stuck with a weird mail loop in an Exchange Hybrid setup and I’m hoping someone here has seen this before. We have Exchange 2013 on-prem + Exchange Online (hybrid). Cisco ESA is our mail gateway, we want to keep outbound mail going...
Dear all, we have a couple of ESA devices with the version 14.2.2-004 and would like to switch to the version 16. Until ca. last week it went well with an intermediate update to version 15, but since ca. last Thursday I got a message, the version 15...
Hello,Our appliance is stuck on the vof service and has accumulated a total of lot of emails in the queue. Could you please help us resolve this issue quickly?The appliance was restarted, but this did not change the situation.Best regards, Oussama
Hello everyone,i am working with a Cisco Email Security Appliance C300V, Version 16.0.3-044Question: Is there any chance to use a Wildcard, or to address a random set of subdomains in a Destination Control List. (For Example: sub1.very.important, tes...
Resolved! AsyncOS 16.0.0-050 upgrade
We have one C100v virtual appliance not yest upgraded to 16.0.4-016. The version running right now are 16.0.0-050 and there is no direct upgrade path from that version, but we should be able to upgrade to 16.0.2-112 and from there to 16.0.4-016.The p...
