The same issue affects edgy i386. I have three of them as the cpqd.com.br domain MXs. It seems that when /etc/network/if-up.d/sendmail is called it cannot resolve the reverse of the host's IP address and that strange string ends up being inserted in /etc/mail/m4/dialup.m4.
The problem occurs whenever I reboot the servers. If I only perform a "ifdown eth0; ifup eth0" it doesn't occur. I edited /etc/mail/sendmail.conf to set DAEMON_NETMODE="Static" (the default is Dynamic) but it didn't solve the problem. (I followed the scripts and could not find where this variable is used. Perhaps it's a left over.) The problem has a very bad side effect for mail servers facing the Internet. Yesterday I rebooted the three machines (for a memory upgrade) and they came out with this error in the sendmail configuration. It took me an hour more or less to notice the problem and to manually solve it. It was enough to have all of them blacklisted at http://cbl.abuseat.org/lookup.cgi. -- [feisty] sendmail unable to automatically determine domain name https://bugs.launchpad.net/bugs/99459 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs