Re: How is EAI mail implemented ?

On 15/06/2021 19:26, Claus Assmann wrote:
> On Tue, Jun 15, 2021, John R Levine wrote:
>> Nobody I've seen tags messages as EAI in their internal queues.
> 
> sendmail does:
> writing: queueup()
> 	/* send various flag bits through */
> ...
> 	if (e->e_smtputf8)
> 		*p++ = 'e';
> 
> reading: readqf()
> ...
> 	  case 'e':	/* message requires EAI */
> 		e->e_smtputf8 = true;
> 

and Exim does:

writing: spool_write_header()
...
  if (message_smtputf8)
   {
   fprintf(fp, "-smtputf8\n");

reading: spool_read_header()
...
     else if (Ustrncmp(p, "mtputf8", 7) == 0)
       message_smtputf8 = TRUE;

-- 
Cheers,
   Jeremy