Email Security

Hello guys, When I send e-mail to account not exist, I received messege from postmaster, like this:Delivery failed to the following recipients or group#550 5.1.1 RESOLVER.ADR.RecipNotFound; not found ## It's possible block this return message ?

I want know have any method can accept incoming mail by sslv3 in AOS 13.5.1. ?

Good Morning,Does anyone know if there is a way to send a pdf through email with the safe print software running where it arrives as a live fillable pdf that can be digitally signed? Currently they arrive as a pdf with a safeprint watermark and are n...

Hi,can any one help on this issue,as we are recieving consistent alert from the Ironport  ( Async C390 12.5.37 ) , is this bug or any activity at Cisco side. Unable to connect to Cisco Web Security Service.URL Filtering will not work correctly.Please...

Hi,we received the following critical alert from esa: Unable to connect to Cisco Web Security Service.URL Filtering will not work correctly.Please verify all network, proxy and firewall settings.Connection to "v2.sds.cisco.com" failed.The last error ...

My Company have a corporate email using Yandex mail. I have a problem when I want to send to a customer domain protected with Cisco ESA. In their Cisco ESA, Message Tracking not record the connection from my domain at all. In their Cisco ESA I have a...

We have a team that occasionally sees an email that made it in to users that contains some brand new or uncaught phishing or malware.  Currently, they use message tracking to find the copies that came in, they export that result to a csv, then send i...

We currently have a certificate on our production system (AsyncOS Version: 13.5.1-277) that is set to expire. InfoSec wants to convert from RSA to ECC if possible. Is it as simple as generating a new self-signed cert which will overwrite the existing...

Hello,  Im't triying to get a backup from my ESA and SMA but I get "You are not in the correct access group to use the saveconfig command." log when I try via CLI with "showconfig, saveconfig or mailconfig" I tried in cluster mode, group mode and mac...

All inbound mail from ESA send to EXIM server. Now I am going to migrate to Microsoft Exchange and I want that ESA to first tries to deliver mail to Exchange (if Exchange has this mailbox), else send the mail to EXIM.In SMTP Routes section I add two ...

can anyone help me in solving this problem?I have a problem when there is an email domain that sends an email to my domain. the following message appears:08 Nov 2019 16:27:34 (GMT +07:00)08 Nov 2019 16:27:34 (GMT +07:00)08 Nov 2019 16:27:34 (GMT +07:...