E-mail - problem with delivery
Often landing on my desk issues regarding end-user e-mail bounces. It is always necessary to verify whether the problem is on our side or the other. I'll try to add basic examples here that will lead to finding a non-delivery is remarkable.
Example No. 1)
Doručení těmto příjemcům nebo distribučním seznamům se zpozdilo: jmeno.prijmeni@domena.com Předmět: Test email Zpráva dosud nebyla doručena. Aplikace Microsoft Exchange bude pokračovat v pokusech o doručení zprávy vaším jménem. Pokusy o doručení zprávy budou pokračovat do 10.3.2010 9:18:11 (GMT+01:00) Praha, Bratislava, Budapešť, Bělehrad, Ljubljana. Pokud zprávu nebude možné do této doby doručit, zobrazí aplikace Microsoft Exchange upozornění. It is necessary nejříve know what their mail server, which we find an excerpt MX record for that domain. Just as it can be determined through the website nmonitoring .
In this case, the IP address returned 77,236,211.45. We will try whether you can connect to mail server:
telnet 77.236.211.45 25 If telnet prints the screen as mailserver version, everything is fine and error is necessary to look at either our mail server (eg, domain registration in the reverse DNS), or on the server (can use blacklists and our domain / IP address there may be listing)
220 host-77-236-211-45.klamta.cz ESMTP Postfix (Debian/GNU) When the time I meet with other problems, I will describe (or expect your comments posřehy of practice).
