Hi Noel/ Wietse, I was just about to reply i had worked it out when your email came in changed it to 2 and it all worked:
smtpslow_destination_recipient_limit = 2 # set this to 2 will take care of the domain. If you set it to 1, throttling will work only if you send mails to the same recipient and not for the same recipient domain. The debugger sleep 6 is overall for both normal smtp relay and smtpslow relay to ensure the server never hits the messages per hour limit of the external relay server. Ive removed the max use (i think i had stuck it in there when testing the server previously) As per Wietse smtp_destination_rate_delay = 6 as an alternative to using the debug command. Am i right in thinking as the smtpslow then uses smtp for delivery it will effect both, as in ensure all emails get a 6 second delay. Thank you both for your quick reply. Best Regards Matt. -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Noel Jones Sent: 23 September 2013 2:26 PM To: postfix-users@postfix.org Subject: Re: Problem with slow transport map On 9/23/2013 7:17 AM, Matt - Opem Solutions wrote: > Hi, > > > > Ive a postfix server which is used to relay emails to an external smtp > server, this was done to prevent the receiving smtp server from being > flooeded by to many messages per hour which i did by using the debug > command and a sleep 6, in addition to this i added a transport map to > slow down delivery even more for certain hosts/recipient domains: > > > > [MAIN.CF FILE] > > transport_maps = hash:/etc/postfix/transport > > smtpslow_destination_rate_delay = 310s > > smtpslow_destination_concurrency_limit = 1 > > smtpslow_destination_recipient_limit = 1 > When you set the recipient limit to 1, the delay is applied to deliveries to the SAME RECIPIENT rather than deliveries to the SAME DOMAIN. This is probably not what you intend. See: http://www.postfix.org/postconf.5.html#default_destination_rate_delay > > > debugger_command = /bin/sleep 6 This shouldn't be necessary after you increase the recipient limit. > -o max_use=1 This shouldn't be necessary either. -- Noel Jones > > > > [TRANSPORT FILE] > > yahoo.com smtpslow:[external.server.com]:25 > > yahoo.co.uk smtpslow:[external.server.com]:25 > > googlemail.com smtpslow:[external.server.com]:25 > > gmail.com smtpslow:[external.server.com]:25 > > hotmail.com smtpslow:[external.server.com]:25 > > hotmail.co.uk smtpslow:[external.server.com]:25 > > outlook.com smtpslow:[external.server.com]:25 > > outlook.co.uk smtpslow:[external.server.com]:25 > > aol.co.uk smtpslow:[external.server.com]:25 > > aol.com smtpslow:[external.server.com]:25 > > comcast.com smtpslow:[external.server.com]:25 > > live.com smtpslow:[external.server.com]:25 > > live.co.uk smtpslow:[external.server.com]:25 > > msn.com smtpslow:[external.server.com]:25 > > msn.co.uk smtpslow:[external.server.com]:25 > > sbcglobal.net smtpslow:[external.server.com]:25 > > verizon.net smtpslow:[external.server.com]:25 > > bellsouth.net smtpslow:[external.server.com]:25 > > yahoo.ca smtpslow:[external.server.com]:25 > > cox.net smtpslow:[external.server.com]:25 > > ymail.com smtpslow:[external.server.com]:25 > > btinternet.com smtpslow:[external.server.com]:25 > > btinternet.co.uk smtpslow:[external.server.com]:25 > > btopenworld.co.uk smtpslow:[external.server.com]:25 > > btopenworld.com smtpslow:[external.server.com]:25 > > mail.com smtpslow:[external.server.com]:25 > > > > The smtpslow is set to use one thread only in master.cf > > > > [MASTER.CF FILE] > > smtpslow unix - - n - 1 smtp -D > > -o syslog_name=postfix-smtp-slow > > -o max_use=1 > > > > The -D (debug) is a bit of a dirty hack as it basically calls a sleep > for 6 seconds between messages to ensure it doesn't hit the external > hosts message per hour limit. > > > > This all works fine, however ive noticed a big problem > > > > If i send 3 emails to my hotmail.com address they all rightly have a > 5 minute (310s) delay between them, however if i send an email to 2 > different hotmail.com address and send 3 messages per recipient it > does correctly insert the 310s delay between the recipients messages. > However the issue is its trying to deliver to both recipients at the > same time, ie > > > > Emails spooled > > Email 1 to both reclipents sent (with the 6 second debug gap) > > Wait 310s > > Email 2 to both recipients sent (with the 6 second debug gap) > > Wait 310s > > Email 3 to both recipients sent (with the 6 second debug gap) > > > > Where as i expected it to instead work like: > > > > Emails spooled > > Email 1 to recipient 1 sent > > Wait 310s > > Email 1 to recipient 2 sent > > Wait 310s > > Email 2 to recipient 1 sent > > Etc > > > > How can i adjust the config so that instead of matching the recipients > its matching the domains as if 50 emails go out to hotmail.com at the > same time to different recipients it doesn't try and delvier them all > at the same time. > > > > Best Regards > > > > Matt. >
