1) Make sure that your domain MX records are working (use dig MX yourdomain.com or nslookup -type=MX yourdomain.com). The name(s) returned should be the real internet names/addresses of your mailserver, not CNAMES as mentioned 2) If those records are correct, try telnetting to your mailserver to find out what is wrong there: telnet my.mailserver.address 25 you will get a helo prompt: type: helo your.workstation.address the mailserver will greet you nicely (;-)) type: mail from: email@otherdomain.com the server should accept the sender name type: rcpt to: someadress@yourdomain.com The server should accept this address as a valid delivery address (please make sure it's an existing address in your domain). If it doesn't, it'll give an error message that should give you some clue as to what is going wrong. Most likely your domain/server address isn't setup right in your sendmail.cw, or you might have a firewall blocking access (if you nmap from inside your own domain the ports may seem open, but they might not be accessible from the outside 3) Ignore gratuitous comments from others about mailservers that are "bigger, better, faster", etc etc etc. People will never agree on which one is best anyway. HTH Stefan rhelms@mayn.de wrote:
Hi,
To mine knowledge, CNAME isn't allow for a mailserver ..
the short version - the entry in your DNS is MX ... for your mailserver.
For more security with your mailserver I suggest you to change to qmail (http://www.qmail.org) and use the tcpservermethod. With qmail you haven't the getroot-problems of sendmail because it uses different mailusers.
Regards, Ruprecht
---------------------------------- E-Mail: rhelms@mayn.de Date: 26-Dec-2001 Time: 10:35:49
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-- ================================================================ Stefan Suurmeijer University of Groningen, Rekencentrum P.O. Box 800, NL-9700 AV Groningen, The Netherlands tel: (+31) 50 363 8258 - fax: (+31) 50 363 3406 E-mail: S.M.Suurmeijer@rc.rug.nl E-mail: stefan@symbolica.nl (private) ================================================================ Quies custodiet ipsos custodes? (Who'll watch the watchmen?) #Define Question ((BB)||(!BB)) - William Shakespeare