sendmail

hellO evryOne
i've a silly problem and i need help ...
sendmail takes a very lOng time while booting ...(i changed the hostname in /etc/hosts -----and /etc/sysconfig/network)
and sometimes sending mail works with root@localhost
and sometimes the old hostname BUT very slow and 've problems ... where should i change the hostname else so sendmail can read it and return back work smooth as it was? help please............. and my /etc/hosts like that and i tryed deleteing a line from those two lines
127.0.0.1 localhost.localdomain localhost
127.0.0.1 Ziox

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Ziox,

In my experience, seeing a slow response from sendmail during startup, is most often related to problems with name resolution. The first question that I would like to ask is do you really want to be running sendmail on your box, if not then you could simply configure it not to start, then this problem would go away.

Now, if you do need to run sendmail, and you would like it to not take several minutes during the boot process, we should take a few moments to determine what the box thinks it called. If you type:

$ hostname

Is the response Ziox or localhost (remember that it is case sensitive). If not you should add whatever the response is to the host file. Tripping points that I can think of include (depending on your version of linux...), if you use DHCP to get your IP address, you may find that your box may want to change its hostname based on information received form the DHCP server (in most cases, with a bit of luck and sweat you can get your box to ignore this data). Also it might be helpful to edit the second line to:

127.0.0.1 Ziox.localdomain Zion

Also you will want to insure that you are mapped to a DNS server or have populated your hosts file so that any name that sendmail attempts to connect to will have a valid resolution, otherwise you will have a considerable wait.

thank you for ur reply ..........my hostname is Ziox i'm sure and i just want to learn sendmail it was work normal before i change the host name ...+ it's a single machine no dhcp i'm on RedHat~9 i just want to know where the sendmail reading the hostname ..? i think the problem here ...i'v a V long /var/mail/mailog to read ........i'll read it later