failure to send mail-jessie

[Bob Holtzman <holtzm@cox.net>]

I'm getting the famous "Error sending message, child exited 127 (Exec
error)."

I have *spit* Ubuntu 14.04 on the same HDD and it works perfectly.

The .msmtprc files are identical:

################################################

# Set default values for all following accounts.
defaults
#tls on
#tls_trust_file /etc/ssl/certs/ca-certificates.crt
logfile ~/.msmtp.log


 # The SMTP server of the provider.
 account default
 host smtp.west.cox.net
 from holtzm@cox.net 
# auth on
 user holtzm
 password xxxxxxxx 
 #tls_nocertcheck 

##################################################

The above file was brought over from Wheezy where it was functioning.

I was considering uncommenting the tls_nocertcheck line but realized
that the .msmtprc file in *spit* Ubuntu is identical.

Any pointers would be appreciated.

The /etc/ssl/certs/ca-certificates.crt is present with 644 permissions
and owner and group root.

Another small detail is that the .msmtp.log isn't being written to.

The only other thing that I can think of is that *spit* Ubuntu uses
postfix where Debian uses exim4, I think.