Am Montag, 23. Juni 2003 21:54 schrieb Adrian Golumbovici: > Hi all, > > I just installed/configured/secured my own postfix server with a dyndns > address. My dyndns entry is as MX server registered and it is working. I > normally have about maximum 5 minutes offline time. My provider disconnects > me each 24 hours, but linux PC connects again immediately and updates > dyndns entry, which normally takes about maximum 5 minutes to propagate). > In this time the dyndns still points to the old ip address, which is either > not connected (no user got it in so short time) or points to someone who > doesn't have the ports opened (no email server). I wondered what happens if > someone/some-server tries to deliver me email in this time. Will it be > bounced or will it retry and finally send it to me when connection > available again? > > Best regards, > Adrian
There are three possible ways (mor or less): The mail is rejected (permanent error) by the host with your old ip address (this host is not configured to accept mails directed to you) so the sender will get a notification about the rejection. There is no further delivery attemp. The mail will be bounced by the host with your old ip address (temporary error). The sender will try to send the mail again. But, a correct configured mailserver would not bounce a mail which is directed to a not local domain, it will reject it instead (it is a relay access denied). If there is no host or the service is not available, the sending server will try it again. Martin -- ------------------------------------------------------------ H E L I X Gesellschaft f�r Software & Engineering mbH ------------------------------------------------------------ Hanauer Landstrasse 52 Telefon (069) 4789 35-30 D-60314 Frankfurt am Main Telefax (069) 4789 35-44 ------------------------------------------------------------ http://www.helix-gmbh.net [EMAIL PROTECTED] ------------------------------------------------------------
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