mail -r option problem

Dear list, I tried to use the -r option with the mail program, but whenever I use the option I get a error like this: odin$ mail -r abcd -s abcd rudolf.syk...@cvut.cz a EOT odin$ sendmail: command failed: 550 Invalid recipient: odin$ mail -s abcd rudolf.syk...@cvut.cz sdas EOT odin$

Re: mail -r option problem

Austin Hook wrote in : |On Sat, 30 Jan 2021, Rudolf Sykora wrote: |> I tried to use the -r option with the mail program, but whenever I use |> the option I get a error like this: |> |> odin$ mail -r abcd -s abcd rudolf.syk...@cvut.cz |> a |> EOT |> odin$ sendmail: command failed: 550 Inva

Re: mail -r option problem

When you look at the full headers of the email received, having sent it without the -r option, double check what the originating domain info looks like. Then try with -r set to the same full qualified originating email address. That way mail doesn't have to figure out what domain to add to t