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Old 11-26-2005, 04:27 PM   #1
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Registered: Oct 2005
Location: Texas
Distribution: SUSE 9.2
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Help with mail server for newbie

When trying to send mail out I get this message returned. Please help with where to start looking for issue. SUSE 9.2

----- The following addresses had permanent fatal errors -----
(reason: 550-reject sender ''.)

----- Transcript of session follows -----
... while talking to
>>> MAIL From:<> SIZE=690
<<< 550-reject sender ''.
<<< 550 Sender address target domain '' is not valid.
554 5.0.0 Service unavailable

I am using the mail command in a terminal session.
Old 11-26-2005, 04:45 PM   #2
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Registered: Mar 2002
Location: Salt Lake City, UT - USA
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Do you own the domain ""? If not, it's likely that you are trying to relay through a host that doesn't allow unrestricted relay (which is a GOOD THING).

Not sure which mail server you are using, but I use Postfix. In the of the postfix configuration directory (probably something like /etc/mail/postfix/ you will either want to change your domain to an IP (if you have no domain registered) or a domain (if you actually have one registered and a DNS service like that points that domain to your IP).

Your server "savanna" is likely the hostname of the system that is running the email server. It is probably not where the error lies, but it's worth trying to see if that is another server on the network (check /etc/hosts or your DNS server's config).

If you have no idea what I'm talking about anywhere in this email, you may be better off running your email through your ISP's own software. Meaning in your email client you just setup your incoming and outgoing servers as the ones provided by your ISP. Then research how MTA's work, what are available and proceed at that point (Postfix or Sendmail are probably the 2 biggest, followed probably by Qmail).

Old 11-26-2005, 05:16 PM   #3
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Registered: Oct 2005
Location: Texas
Distribution: SUSE 9.2
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Yes I own the domain. the host is listed in DNS.
I am using postfix as well on Just want to send mail out from this host.


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