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public:emai:geninfo [2017-02-02 15:10] – vesely | public:emai:geninfo [2024-03-20 12:36] – 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**// | ||
===== Email Services Limitations ===== | ===== Email Services Limitations ===== | ||
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Current level is about 100 email sent per hour, which should be enough for regular email use. | Current level is about 100 email sent per hour, which should be enough for regular email use. | ||
- | It is general security limitation and cannot be changed for individuals. | + | It is a general security limitation and cannot be changed for individuals |
- | There are serious reasons to limit this mostly because of security reasons and to keep general reputation score of our CERGE-EI site positive (so your regular emails will be well accepted by the other parties in the world) | + | There are serious |
Anyway, regular email system is not intended for mass mail services because it counts against the SPAM score and REPUTATION of the sit as a whole. | Anyway, regular email system is not intended for mass mail services because it counts against the SPAM score and REPUTATION of the sit as a whole. | ||
- | SPAM filters all around the world are becoming more strict every day. It is easy now to be on GRAYLIST or BLACKLIST and hard to get back from it... | + | SPAM filters all around the world are becoming more strict every day. It is easy now to be on GRAYLIST or BLACKLIST and hard to get back from it… |
=== Possible workaround === | === Possible workaround === | ||
- | You must divide your recipients amount into smaller packs and sent them in more batches sent each hour... | + | You must divide your recipients amount into smaller packs and sent them in more batches sent each hour… |
+ | |||
+ | ==== 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 === | ||
+ | |||
+ | 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 | ||
+ | < | ||
+ | |||
+ | * **Executable files** | ||
+ | * **Encrypted archives (password protected)** | ||
+ | Actions: | ||
+ | |||
+ | * Emails containing disallowed content (like executable files) are **rejected**. | ||
+ | * **Password protected files are removed** | ||
+ | < | ||
+ | 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) | ||
+ | |||
+ | for details go to [[: | ||
+ | |||
+ | {{: | ||