Matus UHLAR - fantomas via Postfix-users:
> >Josef Karliak via Postfix-users:
> >> what could cause that Postfix do not send DSN of the mail that is
> >> recieved over another server ?
>
> On 05.05.25 08:16, Wietse Venema via Postfix-users wrote:
> >1) As specified in RFC 3461, the remote SMTP client may disable
> >delivery status notifications with:
> >
> > RCPT TO:<u...@example.com> NOTIFY=none
>
> I am not OP but I was curiour if we can check for this somehow.
>
> I guess it should be visible in "postcat" output but I haven't found
> any related docs, perhaps I have missed them?
Like many things, NOTIFY info is represented internally as a number;
the postcat command currently does not convert these to text.
*** ENVELOPE RECORDS maildrop/4ZrjKR2r5BzHXLF ***
...
named_attribute: notify_flags=1
recipient: u...@example.com
The mapping is defined in src/global/dsn_mask.h
/*
* Support for RCPT TO ... NOTIFY=mumble is in the form of bit masks.
*/
#define DSN_NOTIFY_NEVER (1<<0) /* must not */
#define DSN_NOTIFY_SUCCESS (1<<1) /* must */
#define DSN_NOTIFY_FAILURE (1<<2) /* must */
#define DSN_NOTIFY_DELAY (1<<3) /* may */
#define DSN_NOTIFY_BITS (4)
Wietse
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