Hi Alex, On 2015-05-18 Mon 16:37 PM |, Alex Greif wrote: > On Mon, May 18, 2015 at 02:20:08PM +0100, Craig Skinner wrote: > > yes, this should help, in the case that the sender tries longer > than 4 hours. >
RFC 5321, in section "4.5.4.1. Sending Strategy" has: .... ... .. Retries continue until the message is transmitted or the sender gives up; the give-up time generally needs to be at least 4-5 days. ..... > Are there any experiences, after how many hours/days the sender > side (at the large ones like google, yahoo, hotmail, etc) > gives up? > I didn't make notes on that, sorry. >From memory, they honour the 4 day rule. While 1 day greyexp time wasn't enough, 2 days works here for the big free mail providers. If that doesn't work for you, increase it to 3 days & try again. Once even a low (but regular) volume comes through, spamd auto whitelisting does the job without extra help. I created test Goatmail, Snotmail & Yahoons email accounts & mailed my boxes to test. Maybe you could try that from your friend's provider? See this recent thread: http://marc.info/?t=142455920800002&r=1&w=2 SPF is open to abuse. Paul calculated gmail alone SPF lists 217088 total IPv4 addresses 29710560942849126597578981376 total IPv6 addresses http://marc.info/?l=openbsd-misc&m=142478407909186&w=2 That can't be an honest representation of legitimate SMTP servers to add to white lists. Plus all the other providers IP addresses.... Too much work maintaining, loading, parsing all that. Cool. -- We gave you an atomic bomb, what do you want, mermaids? -- I. I. Rabi to the Atomic Energy Commission
