manual formating of Received: hdrs; changed hdr for local receival Now the Received: headers are much friendlier to read. About folding: We must fold any line at 998 chars before transfer. We should fold the lines we produce at 78 chars. That is what RFC 2821 requests. We should think about it, somewhen. The header for locally (i.e. non-SMTP) received mail is changed to the format postfix uses. This matches RFC 2821 better. The `from' clause should contain a domain or IP, not a user name. Also, the `with' clause should contain a registered standard protocol name, which ``local'' is not.

#!/bin/sh
#
# try several ways to guess the hostname
# earlier output lines are probably better

(

# this is what Debian uses
cat /etc/mailname

# probably a good value on GNU/Linux
hostname -f

# this is often the short hostname
cat /etc/hostname

# often the short hostname, but widely available
hostname

# this file was mentioned on the Internet
cat /etc/HOSTNAME

) 2>/dev/null | uniq

exit 0