Email Security

Is Cloud email security devices affected with Leaky vessels vulnerability? Has cisco fixed this?

T-Mobile.de has implemented a very strict new email policy, which regulates if an email gateway can sent to them.The way an email sender can check if they are affected is very easy. A new SMTP error like the following will show up in the mail or SMTP...

Can we setup TLS concurrent connection limit more than concurrent connection on ESA in Global Setting under the Listener?For example if we setup concurrent TLS connection limit 400 and concurrent connection limit 300.Will ESA accept 400 concurrent TL...

We are currently managing our ESA (Email Security Appliance) without utilizing SMA (Secure Management Appliance) and have a requirement to schedule a DLP (Data Loss Prevention) report. Specifically, we need detailed information such as Sender ID, Rec...

Hi,To be short I need this behaviour :FROMTOExpectedUser1@mydomain.frurzfbvkjhzofuzf@gmail.comBounce notification is delivered to User1@mydomain.frSpecialsender1@mydomain.frurzfbvkjhzofuzf@gmail.comBounce notification is delivered to ndr1@mydomain.fr...

Hi, We have ironport c170 and Exchange 2010.  Our GoDaddy certificate is installed on the exchange server and is enabled for SMTP.  We want to enable TLS on the ironport but we have to install a certificate there as well to match the domain name so m...

Hello everyone, i'm working on a case and maybe someone is able to give me suggestions.  There is a Mail coming from Exchange Online via Connector to Exchange OnPrem and from there sent to ESA. The Message has a 550 Failure with status fail/bodyhash_...

I just updated to 15.0.0 build 104 and I am getting the error:ISQ: db.init() failed. Retry after short pause.and the quarantine services are not starting. Might be related but I am also getting :The operating system partition is at 93% capacity Unsur...

Hi,I'm looking for a way to add the domain to the external tag of an incoming external mail, but I'm having a hard time figuring out how to do this. Has anyone tried this already and have an idea how this can be done via message filters (preferred) o...

Hi all i want to open discuss,There is Log in Umbrella, that our ESA try reach for untrusted domain, here the log look like. there is no log in ESA about email that came or send to this untrusted domain. Any idea why this is happend?Thanks    

Hi guys,Can you help me with this problem with inbound mails. From certain domains i get this response on ESA(TLS failed. Reason: Unknown Error).  After that the receiving is aborded. What may be the cause of this. Current version of my OS is 14.2.1....

We receive emails in which the DMARC Aggregate Report is not attached.===========================================From: MAILER-DAEMON@esa1.***.iphmx.comSender: MAILER-DAEMON@esa1.***.iphmx.comTo: dmarc_agg@vali.email, ***@ar.glockapps.com,***@dmarc.ki...

Hello all,I'm looking for a way to test the VOF feature and demonstrate it to my colleagues.Is there a way to send a test email, similar to the GTUBE test for the anti-spam filter?Regards Stefan

Currently antivirus updates still use port 80. How to make all service updates use only port 443? Thanks