On Thu, Jul 02, 2015 at 07:36:38PM +0300, Michael Peter wrote:
> for postfix log file /var/log/maillog, we notice that following line
>
> 1198B1E111: to=,
> relay=mail.example.com[XXX.XXX.XXX.XXX]:25, delay=20,
> delays=4.3/0.01/1.8/14, dsn=2.6.0, status=sent (250 2.6.0 Queued mail for
> delivery
As the subcodes say that "transformation was required for delivery", it
sounds like the mail was converted across formats, or content was omitted.
This can happen if a server decides to strip all attachments or the mail did
contain something unparseable that the server decided to pass along with
