Endpoint Protection

My boss got this symantec error this morning when trying to send an email:  "Your email message was unable to be sent because your mail server rejected the sender: 421.4.7.0.z.nysa.us Error: too many errors.  This only affected him and it was fixed by him renewing his kerberos ticket, which has nothing to do with symantec.  I was wondering why it was symantec that was giving him this error.  Whether it's relevant or not I am not sure but we switched symantec servers this morning but as I said he was the only one affected.

Did this come from SEP or a mail security product? Can you post a screenshot?

here's a screenshot

Have you scanned the PC? You may want to review these articles:

http://www.symantec.com/docs/TECH122425

http://www.symantec.com/docs/TECH92353

Hello,

It is possible that there is an undetected threat is operating on this computer. Checking what program is using common mail ports (performing a netstat -ao from the command line to learn what process is communicating on port 25) is often the best place to start.

http://www.symantec.com/business/support/index?page=content&id=TECH122425

To see this through to resolution, I recommend opening a case with Technical Support.  With the help of a tool like process monitor (ProcMon) the engineers there should be able to help determine the exact location which is causing trouble.

Do these clients send and receive mails from an in-house server (like MS Exchange)?  If there is a mail security product on the mail server (Symantec Mail Security for MS Exchange, for example) then the SEP mail plug-in is probably adding very little to your overall security.  A workaround would be to uninstall this optional component and let the enterprise-level product (SMSMSE) handle the mail scanning.  There won't be any conflict, in that circumstance.

To create a case with with Symantec Technical Support Team.

How to create a new case in MySupport

http://www.symantec.com/docs/TECH58873

Phone numbers to contact Tech Support:-

Regional Support Telephone Numbers:

• United States: https://support.broadcom.com (407-357-7600 from outside the United States)
• Australia: 1300 365510 (+61 2 8220 7111 from outside Australia)
• United Kingdom: +44 (0) 870 606 6000

Additional contact numbers: http://www.symantec.com/business/support/contact_techsupp_static.jsp

Hope this helps!

ok I'll give them a try