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public:emai:geninfo [2021-06-08 14:04] – vesely | public:emai:geninfo [2024-04-22 08:39] – 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**: | ||
+ | |||
+ | In principle: | ||
+ | < | ||
+ | |||
+ | **…o**// | ||
+ | |||
+ | Conclusion: If you get work email from non-institutional email address (like google.com, seznam.cz, post.de, outlook.com, | ||
+ | |||
+ | ===== Important Eecommendations ===== | ||
+ | |||
+ | **Never use your login name as your email address** - use format name.surname@cerge-ei.cz not username@cerge-ei.cz to avoid guessing your real account name by hackers. If your username is publicly known there is much more oportunity to misuse it. Attackers can repeatedly lock your account during brute-force campaigns, for example. | ||
+ | |||
+ | **Use __different password__ for email account and network account** - passwords to email accounts are usually stored at several places (email clients) so it is much easier to reveal these. If passwords are the same, attacker gain access to all your account. | ||
===== Email Services Limitations ===== | ===== Email Services Limitations ===== | ||
Line 21: | Line 37: | ||
==== Maximal size of Email Message ==== | ==== Maximal size of Email Message ==== | ||
+ | //!!! Please note, that base64-encoded files are usually about 137% the size of the original files.// | ||
=== Emails from/to CERGE-EI === | === Emails from/to CERGE-EI === | ||
- | Maximal size of email message including attachments is 10 MB | + | Maximal size of email message including attachments is about 20 MB |
=== Emails sent internaly === | === Emails sent internaly === | ||
- | Maximal size of email message including attachments is 20 MB | + | Maximal size of email message including attachments is about 20 MB |
==== Attachment filtering ==== | ==== Attachment filtering ==== | ||
- | Some attachments are <font inherit/ | + | Some attachments are |
+ | <font inherit/ | ||
* **Executable files** | * **Executable files** | ||
Line 38: | Line 56: | ||
* Emails containing disallowed content (like executable files) are **rejected**. | * 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. | + | |
+ | < | ||
+ | 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</ | ||
+ | |||
+ | ===== 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) | ||
- | Warning: | + | for details go to [[:public: |
- | **<font inherit/ | + | {{: |