Exim4 problem cant install mailserver

[taised]

zoxovsky: It could just be that your chosen mirror was down when you ran the install command. I suggest you post the output of the following two commands:

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sudo apt-get update
sudo apt-get -s upgrade

Note that the "-s" in the last command is a simulation just to show what can be upgraded. Unless you have a reason not to upgrade one or more packages then it is generally best to keep a Debian stable system fully upgraded.

If the above shows the "four zeros", indicating that your system is up to date, then I suggest you post the output of the following two commands:

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sudo apt-get install exim4
apt-cache policy exim4

Sorry to bother but i have exact same problem, but not able to solve it:

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# sudo apt-get -s upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

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# sudo apt-get install exim4
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package exim4 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'exim4' has no installation candidate

My version table is empty

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~# apt-cache policy exim4
exim4:
  Installed: (none)
  Candidate: (none)
  Version table:

i've tried to edit the sources.list file adding some of those found here and elsewhere but no success. Any other idea? Thanks in advance for help

Edit: i'm using Debian 8

[Head_on_a_Stick]

i've tried to edit the sources.list file adding some of those found here and elsewhere

That sounds ominous...

Please post the output of

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apt policy
grep -v '^#\|^$' /etc/apt/sources.list{,.d/*}