I have found this problem using the latest version of Xeams (Version 7.0, Build 6081) running on Debian 10 (Buster).
Basically, when I attempt to send a mail using the 'mail' command line, I get the following errors:
Cannot open mailer: No such file or directory
cannot send message: No such file or directory
I assume that Xeams is not a sendmail replacement, therefore the mail command has no destination.
Has anybody found a workaround for this?
Robert Essex