[wellylug] sendmail problems

[Persian]

Hi all

I have Redhat 9 and I use mutt, which I believe from a book I have that mutt
is using sendmail. Until last week I had woody and mutt used exim.(I believe)

These are the errors I get:

(In my book it says I need to edit .mc (macros) files and then to generate new .cf files
I need to run #make -C /etc/mail to put the changes into the .cf files.)

----------------------------------------------- Error no.1.
. while talking to mail.vlists.net.:

>>>> >>> MAIL From:<lyndsay at localhost.localdomain> SIZE=1258

> <<< 553 5.5.4 <lyndsay at localhost.localdomain>... Real domain name required for sender address
> 501 5.6.0 Data format error
> ----
------------------------------------------------------- Error no.2. (3 different mails sent)
he original message was received at Mon, 18 Aug 2003 20:17:56 -1200
from localhost.localdomain [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
   <3differentparadiseusers at paradise.net.nz>
       (reason: 553 sorry, your envelope sender is in my badmailfrom list (#5.7.1))
       
          ----- Transcript of session follows -----
	  ... while talking to pop3.paradise.net.nz.:
	  
	  >>>>>> DATA
	  
	  <<< 553 sorry, your envelope sender is in my badmailfrom list (#5.7.1)
	  550 5.1.1 <all3oftheseparadiesusers at paradise.net.nz>... User unknown
	  <<< 503 RCPT first (#5.5.1)
	  
---------------------------------------------------------------------	  
	  
All I have put so far is the line in sendmail files via the above method
 -   define( SMART_HOST', smtp.ihug.co.nz'). 
 This line was remarked and it had smtp.yourprovider

Can anyone help me with this?

TIA 

Persian
(as usual, please remember I don't know anything)