Hi,we have problems to renew our licenses.Could you please guide us to this reenew?
This is to inform you that, effective October 14, 2025, Microsoft Outlook 2019 is no longer supported for the Secure Email Encryption Service Add-In and Secure Email Submission Add-In.
To continue using these Add-Ins, we recommend upgrading to Microsoft 365. Starting October 2025, download and install the new manifest for:
- Secure Email Encryption Service Add-In from the CRES Admin Dashboard
- Secure Email Submission Add-In from the Cisco Software Download Portal
After downloading the manifests, follow the instructions provided in the Submission and Encryption Add-In guides. For more information, see: Cisco Email Encryption - End-User Guides.
We would like to inform you that starting with the AsyncOS 16.5 release, TLS versions 1.0 and 1.1 will no longer be available as configuration options in both the CLI and GUI.
To ensure secure email delivery and receipt, you should use TLS versions 1.2 and 1.3. These versions can be configured via the sslconfig CLI command or through the System Administration > SSL Configuration menu in the user interface.
For detailed instructions on updating TLS versions, please refer to the “System Administration” section of the User Guide for AsyncOS 16.0.x for Cisco Secure Email Gateway.
Hi,we have problems to renew our licenses.Could you please guide us to this reenew?
Is there a way to send the emails that my incoming filter identifies to the SPAM quarantine? I require the user to be able to see the quarantine and check himself if he needs to release his emails. Otherwise, there is a way to enable the user to cons...
Dear all,we're using an outgoing message filter in our ESA to strip compressed attachments from e-mails:--------------------------------------------------------Condition: Attachment File Info Rule: attachment-filetype == "Compressed" Action: drop-at...
A security professional recently suggested that we created an "extensions allowed" list in our Spam appliance instead of an extensions blocked list. Has anyone done this before and if so what is the best way to accomplish this?
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Hi,Long time ESA appliance administrator for our company that needs some help. I read through the guides but still am not clear on what to do. We are using an ESA C195 for inbound and outbound filtering of our Exchange 2016 on-premise server.So, I n...
Dears I have Cisco Ironport C170 which is retired but it have some very important logs about email which I would like not to loose them by pushing them to our SIEM and get copy of them. I can find Message Tracking logs and search about any email but...
We have multiple interfaces configured on our C695 appliances, only one of which has any kind of HTTPS enabled on it. However, all the interfaces which don't have HTTPS configured are set to use the Cisco default certificate, and the box to change th...
Is there a way to create a message filter that tags an incoming e-mail message to an ESA if for example the x-sender and return-path don't match? I would like to insert a header in those messages that I can catch with a content filter to insert a hea...
Hello,Please see below, i created a filter under content filtering to block any incoming email that has an HTML attachment. it's now for some reason blocking a lot of emails from many senders. although they are either allowed senders or just the bod...
Hello,In the past, we were told by Microsoft 365 to allow an IP range. We were told that we have to have 40.107.0.0/17 in our allowed list. However, every 2-3 days we receive SPAM emails and when we investigate the issue on IronPort we notice that th...
Hi there, I'm looking for end of fixes and security patch develoment date but It seems to be much harder than I suppose.Is there anywhere to check it?Thanks in advance for your help.
Dear all,We are in process of configuring external authentication using SAML and ADFS on ESA, but are having problems configuring IDP side. User guide for AsyncOS is pretty vague in that part, with sample custom rule returning error (it is obvious wh...
Dear all, I have configured External Threat Feeds on ESA appliances. I have integrated AilenVault open source TAXII server. However, I have two appliances which are connected to a cluster. On one appliance poll is successful every one hour. But on se...
Hello everyone,we´re currently searching a opputinity to handle massmaling.The goal is simple: send this mass mails out from a different interface.We have already the following Mailfilter:HighRiskDelivery-Massmail: if (rcpt-count > 20) AND (NOT (rcpt...
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