On 9/15/2011 10:30 AM, Kirill Bychkov wrote: > Hello, > > Pleas explain me about option initial_destination_concurrency. > Default value of initial_destination_concurrency is 5. > Example: > Queue has 2000 emails to domain example.com <http://example.com>. > These emails not sent, because mail server example.com > <http://example.com> said: > 421 Ratelimit exceeded for <ip address my server> > When postfix trying send these emails, part sending normal, but big > part don't send, because ratelimit exceeded again. > Because of the permanent mailing, after 5 minutes, queue updated > with new email to this domain.Vicious circle. > Please advice, what of best value for option > initial_destination_concurrency do I need? > Thank you. > > -- > Kirill. > >
See the slow destination discussion found under http://www.postfix.org/QSHAPE_README.html#backlog -- Noel Jones
