Ubunutu 9.04 Jaunty

Email-Date-Format-1.002
Email-MIME-1.903
Email-MIME-Encodings-1.313
Email-Simple-2.100
Email-Stuff-2.101

I also observe the same behavior on a SLES10 machine with the same modules and versions.

On another SLES10 machine with older modules, I don't see this behavior, i.e., when I use as_string, the lines are terminated by \n, not \r\n. The versions on that machine are:

Email-Date-Format-1.002
Email-MIME-1.863
Email-MIME-Encodings-1.313
Email-Simple-2.005
Email-Stuff-2.09