[MlMt] incorrect From:

[Randy Bush]

>     ryuu.rg.net:/Users/randy> defaults read com.freron.MailMate MmDefaultBccHeader
>     {
> 	"from2 at arrcus.com" = "bcc2 at arrcus.com";
> 	"from at psg.com" = "bcc at psg.com";
>     }
> 
> when i am in the arrcus.com INBOX and c(ompose, the compose window shows
> that the message will be "From: randy at arrcus.com"
> 
> but the received message is "From: randy at psg.com"
> 
>     From: "Randy Bush" <randy at psg.com>
>     Subject: test 2
>     To: "Randy Bush" <randy at psg.com>
>     Date: Tue, 12 Jan 2021 14:07:24 -0800

i watched more closely

  mm changed the displayed in gui From: (from randy at arrcus.com to
  randy at psg.com) when i typed the to: randy at psg.com.

randy