Cisco Secure Email Add-Ins No Longer Supported on Microsoft Outlook 2019
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:
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.
TLS 1.0/1.1 Deprecation from AsyncOS for Secure Email Gateway, Starting version 16.5
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.
Greetings, I've been using a C100 for quite a while and I love it.We've always had some trouble with one our public IP being blacklisted in DUL.We contacted our ISP and after months of troubleshooting they resorted to giving us another IP that d...
Hello,We have two C350 appliances that we're looking at configuring for outbound email.Currently, inbound email is scanned and positively identified spam is quarantined locally.I am testing outbound email and would like to scan outbound email for spa...
I have setup our central quarantine box on the m660 and have spam messages going there. In the config setup, I put two ironport boxes in the 'deliver messages via' so that the release message can go through the routing again and deliver to the correc...
We are beginning to receive DNS SERVFAIL errors and delayed or failing message delivery to domains implementing DNSSec. Are there any configuration settiings on the IronPort C Series to accomodate the increased payload size associated with DNSSec?
Hello there,"tophosts" CLI command provide similar report as below.How long the counts under each column is accumulated?.For example, there are "336" hard bounces for "aol.com". This is in an hour or in 24 hours, in life time?.Is it possible to reset...
Hi All,I have a query on SMTP routing when using the Alt-Mailhost command in a Message Filter...Our configuration in overview is two Ironport devices (C650's at AsyncOS 6.4) at separate sites, configured as a cluster (all config is common across site...
Hi,I'm having a bit of an issues with white space and email footers. This might get confusing trying to explain, but here goes...Any outbound email from certain domains are tagged with a plain text disclaimer which works fine, it arrives at the desti...
Recently, I receive the warning message from IronPort C350.Warning: Error transferring sophos.ini?..............................Can anybody tell me what does this message mean?
I remember at one time coming across a homebrew utility that would parse an XML configuration and generate a human readable HTML document. Does this tool still exist? it used to be at https://www.ironportnation.com/forums/configlook/
RE: Smart ReceiptObviously the RE: Smart Receipt is the actual subject of the email. Where did the Phishing Fraud and HTML statement come from? There is nothing in the Ironport documentation about this when I did a search.
Hello,We have a question regarding who can send mail through the appliance. Is there a way to allow anyone to send mail through the appliance (not defining a specific network or IP in the Relay mail flow policy)? After this is done we would only allo...
Is there any way to change the display of messages in the spam quarantine interface so the subject line is not truncated? We have some users that don't want to have to mouse over to see the full subject line for each message.
