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how_to:your_connection_has_been_blocked_temporarily_-_try_again_later [2013/01/07 17:19] – paul | how_to:your_connection_has_been_blocked_temporarily_-_try_again_later [2015/06/17 13:39] – paul | ||
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======Error message: Your connection has been blocked temporarily - Try again later====== | ======Error message: Your connection has been blocked temporarily - Try again later====== | ||
- | If you get an error message in your email client software saying '' | + | If you get an error message in your email client software saying '' |
- | You can set how the IPS works by going to '' | + | There are two components in which detect abnormal activity - the SMTP service and the Login component. |
+ | |||
+ | =====SMTP Service===== | ||
+ | You can set how the SMTP Service | ||
+ | {{: | ||
Every time one of the monitored events happens (eg a failed login, or a message containing a blocked attachment name) the relevant ' | Every time one of the monitored events happens (eg a failed login, or a message containing a blocked attachment name) the relevant ' | ||
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If an IP address tries to relay through VPOP3 twice (2 x 100), tries to log on 5 times with an invalid password (5 x 50), tries to send to 12 local addresses which don't exist (12 x 50) within an hour, then the total score will be 200 + 250 + 600 = 1050, so that IP address will be blocked for 30 minutes. | If an IP address tries to relay through VPOP3 twice (2 x 100), tries to log on 5 times with an invalid password (5 x 50), tries to send to 12 local addresses which don't exist (12 x 50) within an hour, then the total score will be 200 + 250 + 600 = 1050, so that IP address will be blocked for 30 minutes. | ||
- | You can see which events have happened | + | =====Login Component===== |
+ | You can access the settings for this by going to Settings -> Security Settings -> Intrusion Protection. VPOP3 will block IP addresses if it sees repeated attempts to log in with an invalid username and/or password from an IP address. This is separate from the Account Locking facility which just blocks an account, as this will also check for attempts to log in to multiple different accounts, or even accounts which don't actually exist in VPOP3. | ||
- | =====The 'Never Block' list===== | + | =====Managing the blocked IP addresses===== |
+ | You can manage the blocked IP addresses on either the SMTP service or Security Settings pages described above. The options below are identical on those two pages. | ||
+ | |||
+ | ====Viewing the event log==== | ||
+ | You can see which events contributed to an IP address being blocked by clicking on the '' | ||
+ | |||
+ | ===The 'Never Block' list==== | ||
The 'Never Block' list tells VPOP3 never to block certain IP addresses even if they do suspicious actions | The 'Never Block' list tells VPOP3 never to block certain IP addresses even if they do suspicious actions | ||
You can add/remove addresses from the 'never block list' by clicking on the '' | You can add/remove addresses from the 'never block list' by clicking on the '' | ||
- | =====The ' | + | As well as preventing the blocking of individual IP addresses, you can stop a subnet being blocked by using CIDR notation, eg **192.168.1.0/ |
+ | ====The ' | ||
The ' | The ' | ||
- | You can view the block list as well as manually block IP addresses, or remove IP addresse | + | You can view the block list as well as manually block IP addresses, or remove IP addresses |
+ | |||
+ | As well as manually blocking individual IP addresses, you can block a subnet by using CIDR notation, eg **192.168.1.0/ | ||
+ | |||
+ | In the block list, if you double-click on a blocked IP address, then a message will appear summarising why that IP address was blocked. | ||
=====Common reasons for problems===== | =====Common reasons for problems===== |