On Tue, 2018-05-08 at 20:41 +0200, deloptes wrote: > Kamil Jońca wrote: > > > How can I achieve this? > > I looks like I have write custom acl, but it is not obvious to me how to > > write proper condition in such acl. > > hi, > where is the recipient?
It's specified as part of the SMTP protocol, not the TO: header in the actual email. > why would you want to receive for "Undisclosed-Recipient". It's a common method of indicating there was no address specified for the TO: field, e.g. when all recipients we're BCC'd. > I suggest you look deeper and see where it is coming from. In the end you > may drop or reject this mail as it does not go anywhere. > To me it looks like something is broken A quick look at RFC 5322 seems to indicate to me that Undisclosed-Recipient:; is a valid way of specifying a group in a field that expects an address But the log snippet the OP posted had: ... failing address in "To:" header is: <Undisclosed-Recipient:;@imap.poczta.onet.pl>): "@" or "." expected after "Undisclosed-Recipient": failing address in "To:" header is: <Undisclosed-Recipient:;@imap.poczta.onet.pl> which does look suspect. The header should be Undisclosed-Recipient:; or <[email protected]> Looks like something is using the group name 'Undisclosed-Recipient:;' as LOCAL-PART of an address specification. But I'm no expert and could be talking rubbish... -- Tixy
