Problem: Qmail and Eudora 4.0

[Dileep Agrawal]

Some of my customers using Eudora 4.0 are having problems using qmail for
relaying (SMTP server).  They get this error message: 

SMTP server said: 

451 put, E=\r\n at the end of Mether, Mtcp, or Msmtp in sendmail.cf if you
are using Solaris 2.5 (fixed in 2.5). I cannot accept messages with stray
newlines.... 

It does not happen with Eudora 3.0.  Does Eudora put in stray newlines?  Is
there a fix?

TIA