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<P><FONT SIZE=2>Hello All, </FONT>
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<P><FONT SIZE=2>I apologize if this question is too off topic as it relates more to sendmail than it does to MailScanner. </FONT>
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<P><FONT SIZE=2>Im running MailScanner 4.22-5, sendmail 8.12.9, spamassassin 2.55 on RH 9.0. My mailscanner server is setup on my lan and is connected to the internet via NAT (ex.ter.nal.ip > 192.168.1.51). The server is configured to resolve DNS from an internal dns server (192.168.1.2). The server is configured to route mail for 3 domains, (a.com, b.com, c.com) from the internet to an internal communigate server (192.168.1.13). </FONT></P>
<P><FONT SIZE=2>The internal DNS server is not setup with any MX information for a.com b.com or c.com. My mailertable looks like:</FONT>
<BR> <FONT SIZE=2>a.com smtp:[192.168.1.13]</FONT>
<BR> <FONT SIZE=2>b.com smtp:[192.168.1.13]</FONT>
<BR> <FONT SIZE=2>c.com smtp:[192.168.1.13]</FONT>
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<P><FONT SIZE=2>The [] should imply that MX records should be ignored for routing. Everything works fine for weeks and weeks. Then one day, a DNS change is made to b.com and now b.com is returning "canonical name = www.b.com" from an MX query on the 192.168.1.2 server. Messages are still routing to communigate but now they are being rewritten with a To: field = username@www.b.com instead of username@b.com. Now communigate starts bouncing messages because it cant find these users in the domain. </FONT></P>
<P><FONT SIZE=2>Why would sendmail re-write the To: field and how can I avoid this? I want sendmail to route mail exactly as I say it should and not reference DNS for the domains I have routing enabled for. What am I doing wrong? </FONT></P>
<P><FONT SIZE=2>Thanks,</FONT>
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<P><FONT SIZE=2>Jason Burzenski</FONT>
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