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public:emai:geninfo [2017-02-06 10:26] veselypublic:emai:geninfo [2024-03-20 12:43] (current) vesely
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 ====== Email at CERGE-EI in general ====== ====== Email at CERGE-EI in general ======
 +
 +===== Email Related Guidelines =====
 +
 +**CUNI Guideline – Use of private e-mail addresses**: [[https://cuni.cz/UKEN-907.html|EN version]] / [[https://cuni.cz/UK-9142.html|CZ version]]
 +
 +In principle:
 + <font inherit/inherit;;#d35400;;inherit>NO PRIVATE EMAIL FOR OFFICIAL COMMUNICATION IS ALLOWED</font>
 +
 +**…o**//**nly work e-mail accounts **under institutional domain **may be used for employees to send work e-mail **messages at institution, to send e-mail messages to students, and any other communication at institutuin, as well as sending e-mail messages to third parties. With respect to the GDPR, it is not admissible to use private e-mail accounts or accounts at other organizations to send work e-mail messages, to communicate with students, to handle the official administrative agenda, etc.//
 +
 +Conclusion: If you get work email from non-institutional email address (like google.com, seznam.cz, post.de, outlook.com, yahoo.com etc.) you should take it as a potential fake email. Every employee and student at institutuon has his/her own institutional email address so it may be expected to get emails from such addresses, not from freemail etc.
  
 ===== Email Services Limitations ===== ===== Email Services Limitations =====
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 ==== Maximal size of Email Message ==== ==== Maximal size of Email Message ====
  
-Maximal size +//!!! Please note, that base64-encoded files are usually about 137% the size of the original files.// 
 +=== Emails from/to CERGE-EI === 
 + 
 +Maximal size of email message including attachments is about 20 MB 
 + 
 +=== Emails sent internaly === 
 + 
 +Maximal size of email message including attachments is about 20 MB 
 + 
 +==== Attachment filtering ==== 
 + 
 +Some attachments are 
 + <font inherit/inherit;;#d35400;;inherit>**not allowed**</font>  , especially: 
 + 
 +  * **Executable files**  (binary executables, executable scripts, documents containing macro, etc.). 
 +  * **Encrypted archives (password protected)**  (like ZIP files). 
 +Actions: 
 + 
 +  * Emails containing disallowed content (like executable files) are **rejected**. 
 +  * **Password protected files are removed**  from the message. Original message is eventualy placed to the personal quarantine and may be manually released later. 
 + <font inherit/inherit;;#d35400;;inherit>Be VERY careful when dealing with quarantined files. \\ 
 +They may contain malicious code, ransomware, viruses. \\ 
 +Don't open any file unless you are certain it's legitimate. \\ 
 +If not sure or have questions, contact helpdesk@cerge-ei.cz</font> 
 + 
 +===== Quarantine access ===== 
 + 
 +Ironport sends hourly digest about new quarantined messages 
 + 
 +It is practical to keep the link to your personal quarantine page for future use (link: View All Quarantined Messages) 
 + 
 +for details go to [[:public:emai:ipqarantine|Email - Quarantine (Ironport)]] article 
 + 
 +{{:public:emai:pasted:20210930-111653.png?400x222}}
  
  
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