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<DIV dir=ltr align=left><SPAN class=210275616-09062012><FONT color=#0000ff
size=2 face=Arial>I still haven't figured out of the error is coming from your
internal server or an external server. I haven't even considered sendmail for
years but I am sure there is a way for you to set a specific sub domain as an
internal domain so sendmail doesn't try to route the mail externally. I am
assuming you are not trying to send mail to the world from a server that has no
world routeable IP information, that would be very bad. If you are sending from
an internal server to a server that delivers to the outside and that server is
the one complaining such as </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=210275616-09062012><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=210275616-09062012><FONT color=#0000ff
size=2 face=Arial>user -> server.domain.com -> domain.com -> the
world</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=210275616-09062012><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=210275616-09062012></SPAN><FONT face=Arial><FONT
color=#0000ff><FONT
size=2>what exactly is your structure internal->external->world or internal->world? If it's the second then alias the internal to the external or add the external as the MX for the internal and make sure the external knows it is handling inbound for the</FONT></FONT></FONT></DIV>
<DIV><SPAN class=210275616-09062012></SPAN><FONT face=Arial><FONT
color=#0000ff><FONT size=2>i<SPAN class=210275616-09062012>nternal domain and it
knows how to route them back to the internal
server.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=210275616-09062012></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=210275616-09062012>There is no reason to place the internal servers on a
public IP but there has to be a route for the mails to get where they are going
if they send to the world.,</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=210275616-09062012>if not configure your local sendmail to accept
server.domain.com as local ( look at your sendmail local domains list where
localhost and/or localhost.localdomain are
listed)</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=210275616-09062012></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=210275616-09062012></SPAN></FONT></FONT></FONT> </DIV>
<DIV><BR></DIV>
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<FONT size=2 face=Tahoma><B>From:</B> mailscanner-bounces@lists.mailscanner.info
[mailto:mailscanner-bounces@lists.mailscanner.info] <B>On Behalf Of </B>Kay
Irmer<BR><B>Sent:</B> Friday, June 08, 2012 1:04 PM<BR><B>To:</B> MailScanner
discussion<BR><B>Subject:</B> Re: From Postmaster Email
Bouncing<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>The external IP of an international Mailserver must have an DNS resolution
and from my point of view also an valid Mx entry.</DIV>
<DIV>A reverse DNS should also be given.</DIV>
<DIV>For internal Subdomains masquerading to the main domain could also
incr<BR><BR>Am 07.06.2012 um 19:02 schrieb Al Cooper <<A
href="mailto:cooper@hmcnetworks.com">cooper@hmcnetworks.com</A>>:<BR><BR></DIV>
<DIV></DIV>
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<P class=MsoNormal>Hi All,</P>
<P class=MsoNormal> </P>
<P class=MsoNormal>A few weeks ago my server’s emails sent from the postmaster
user started to bounce with the following error message: </P>
<P class=MsoNormal> </P>
<P class=MsoPlainText>The following addresses had permanent fatal errors -----
<user>@<A href="http://domain.com">domain.com</A></P>
<P class=MsoPlainText> (reason: 553 5.1.8 <<A
href="mailto:root@server.domain.com">root@server.domain.com</A>>... Domain
of sender address <A
href="mailto:root@server.doman.com">root@server.doman.com</A> does not
exist)</P>
<P class=MsoPlainText> (expanded from: <<A
href="mailto:root@server.domain.com">root@server.domain.com</A>>)</P>
<P class=MsoNormal> </P>
<P class=MsoNormal>It appears that my email is being blocked because there are
not DNS records for the sub-domain <A
href="http://server.domain.com">server.domain.com</A>.</P>
<P class=MsoNormal> </P>
<P class=MsoNormal>If this is correct how do I change the postmaster sender
address from <A href="http://server.domain.com">server.domain.com</A> to <A
href="http://domain.com">domain.com</A>?</P>
<P class=MsoNormal> </P>
<P class=MsoNormal>Or is there a better solution?</P>
<P class=MsoNormal> </P>
<P class=MsoNormal>Thanks for your help,</P>
<P class=MsoNormal> </P>
<P class=MsoNormal>Al </P></DIV><BR>-- <BR>This message has been scanned for
viruses and <BR>dangerous content by <A
href="http://www.mailscanner.info/"><B>MailScanner</B></A>, and is
<BR>believed to be clean. <BR>-- <BR>This message has been scanned for viruses
and dangerous content by the VPIsystems MailScanner. </DIV></BLOCKQUOTE>
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