On 06/27/2010 01:11 PM, Genes MailLists wrote: > > Additionally - some of the gray list tools may not perform well if the first reject is back to MX-host-1 and the next queue flush comes from MX_host-2.
gmail, as an example, uses over 2,500 outbound mx hosts ... if queues are shared (certainly can be) and if the tool you're using doesn't whitelist them all, or rejects until it sees the same host retry you could be waiting a long time - with queue flush timeouts between 10 and 20 mins ... :-) You can work out the worst case delay ... in practice it may be not terrible. greet pause delays you at most 3 seconds ... im ok with that - still I do set the pause to 0 for all major ISP's (gmail, yahoo, etc) So if you're gonna gray list - please whitelist all the standard ISP outbound mx hosts ... gene/ -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
