Hello everybody! I have a little problem with local delivery performance. Due to specific mail routes (it's complicated), on a couples of my SMTP gateways, I have to deliver all local mail to another smtp:host:25. I do the following:
myhostname = external.mydomain.com mydomain = mydomain.com mailbox_transport = smtp:internal.mydomain.com:25 default_process_limit = 1000 When "internal.mydomain.com" unreachable, I have queue about 200.000 queued mails on my "external.mydomain.com". And when internal.mydomain.com comes back, my external.mydomain.com delivers mails to it very, very slow. About 50-60 mails per second. I though, that it is postfix's weakness, but when I do the following: mydomain = fakedomain.com relayhost = [internal.mydomain.com] and restart postfix, all queue flushes to internal.mydomain.com 20 times faster (about 1000 mails per second), than if it mailbox_transport = smtp:internal.mydomain.com:25. My question is - how can I get _MAXIMUM_ performance of local delivery by smtp/lmtp. As fast, as forwarding by "relayhost"? Due to specific of my mail-routing, I can't use "relayhost" scheme. Thank you very much.
