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37 lines
1,009 B
Markdown
37 lines
1,009 B
Markdown
# Mail (server) black- and whitelist
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## mail server blacklist
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### Problem
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- some mail servers don't accept mails due to their spam filter
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- users blame timelimit for it although their bad mail service is the problem
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### Solution
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- (external) monitoring
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- the blacklist
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### Description
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The mail server blacklist is a list of servers to which no sign up mails are sent.
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But instead of doing nothing, the client is informed about that so that it can tell
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the user that this mail service is not supported and that he should use a mail address
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at an other mail service.
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## mail (server) whitelist
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### Problem
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- some users do run private server instances
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- they do not want that someone else can use their instance
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### Solution
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- the whitelist
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### Description
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The whitelist contains mail servers and/ or mail addresses which should be allowed.
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Users of mail addresses which are not in the whitelist are informed about that
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so that they know that it is a private instance and that they can not use it.
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