Package: msmtp
Version: 1.4.21-1
Some applications, such as request-tracker3.8 when generating bounce mail,
run msmtp -f "<>". This confuses msmtp into sending mail with an invalid
reverse-path <<>>:
--> EHLO localhost
<-- 250-mx.google.com at your service, [173.203.242.189]
…
--> MAIL FROM:<<>>
<-- 555 5.5.2 Syntax error. k1sm468660ybj.12
sendmail: envelope from address <> not accepted by the server
sendmail: server message: 555 5.5.2 Syntax error. k1sm468660ybj.12
sendmail: could not send mail (account default from /etc/msmtprc)
A workaround is to run msmtp -f "" instead.
The Sendmail release notes have some relevant items:
8.12.7/8.12.7 2002/12/29
If -f "" is specified, set the sender address to "<>". Problem
noted by Matthias Andree.
8.7/8.7 1995/09/16
Accept "<<>>", "<<<>>>", and so forth as equivalent to "<>" for
the purposes of refusing to send error returns. Suggested
by Motonori Nakamura of Ritsumeikan University.
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