Am 13.10.2011 14:18, schrieb Tolga:
On 10/13/2011 03:09 PM, Reindl Harald wrote: > is this your first mailserver? No, it's not my first mailserver, but I have lost my previous configuration > the question "if i need both" cares me a little bit because logically a > foreign > mailserver has a MX record for you and will always use 25 because he will not How can I find out which mailserver has MX for me? but it sounds like this is your first mailserver because your last question shows you are missing basics - one of them is how can anybody lose a whole configuration - backups anywhere! no other mailserver has MX for you you have to know if your mailserver is MX the other mailserver says "hm mail for b...@domain.tld", who is MX for "domain.tld" if there is your mailserver used he will try to deliver to your server on port 25 so if your mailserver is MX for any domain you need port 25 if your mailserver is only a relay with authentication you need only submission, but this depends on the roles your mailserver is playing and has nothing to do with a lost configuration - these facts are the base of the needed configuration
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