From Bugzilla Helper: User-Agent: Mozilla/4.76 [en] (X11; U; Linux 2.4.2-2 i586) Description of problem: Sendmail would not forward to a program. As a result the vacation program (from powertools 7.1) would not work as well. How reproducible: Always Steps to Reproduce: 1.Instal vacation on somehost 2.initiate vacation program as someuser 3.send e-mail to the someuser@somehost Actual Results: ----- The following addresses had permanent fatal errors ----- "|vacation someuser" (reason: 550 Unsafe for mailing to programs) Additional info:
This is just a permissions issue. Sendmail will refuse to forward to programs if your .forward is group or world writable. This is because it lets anyone with write access to your .forward file run any program as you (a *huge* security risk). To fix, just "chmod go-w $HOME/.forward"
No it is not a (file) permission issue. It was chmod 600. This is most likely RedHat "improving" on sendmail default configuration.
After I replaced sendmail with postfix, vacation works.
I hereby confirm dima's bug report and that his workaround (replace sendmail with postfix) works. RH 7.1, clean install. "chmod 0600 ~/.forward" does not help.
sendmail has more checks for permission problems and everything works fine, if I test these things here. Florian La Roche