On Fri, 11 Jan 2019, Gabriel Kaufmann wrote:
Hello Joseph,
thanks for your reply.
doveadm fetch -u my-mailbox@domain.net 'guid hdr.message-id' ...
You're on your own for everything else.
That works and I may be can make it work with that using a shell-script interacting with getmail as Filter. But indeed it's fetching ALL message-ids. It would be perfect if I could make search query on 'guid hdr.message-id' to get only a result (or none) if there is a message matching the message-id.
Whether this is good depends on how much duplication there is. If you're adding a small number of message to a large corpus, it *may* be better to loop through message-ids. If you're merging in a large mailbox, it's probably better to do bulk dumps of both boxes, then process them.
I'm not sure whether dovecot's caches are sequential O(n) or hashed O(1), but each query has overhead, so you may be better off doing a dump of message-ID's, then cross-referencing.
Do you have any idea if it's possible to use doveadm search for single message-id without having to query over all messages?
"-ftable" is just to make it easier to parse.
doveadm -ftable fetch -u my-mailbox@domain.net \
'guid hdr.message-id' \
HEADER message-id '<1546519978.5428@paypal.com>'Keep in mind search is for case-insensitive fragments, so this pattern matches be a superset of the above '1546519978.5428@PAYPAL.COM'.
Joseph Tam jtam.home@gmail.com