34 messages in net.sourceforge.lists.courier-usersRe: [courier-users] Re: MX lookup| From | Sent On | Attachments |
|---|---|---|
| Lukas Vesely | Jul 29, 2002 8:39 am | |
| Sam Varshavchik | Jul 29, 2002 2:20 pm | |
| Lukas Vesely | Jul 30, 2002 7:59 am | |
| Sam Varshavchik | Jul 30, 2002 2:30 pm | |
| Johannes Erdfelt | Jul 30, 2002 3:02 pm | |
| Juha Saarinen | Jul 30, 2002 3:20 pm | |
| Sam Varshavchik | Jul 30, 2002 3:21 pm | |
| Johannes Erdfelt | Jul 30, 2002 3:32 pm | |
| Sam Varshavchik | Jul 30, 2002 5:35 pm | |
| Juha Saarinen | Jul 30, 2002 6:03 pm | |
| Juha Saarinen | Jul 30, 2002 6:13 pm | |
| Johannes Erdfelt | Jul 30, 2002 6:20 pm | |
| Johannes Erdfelt | Jul 30, 2002 6:37 pm | |
| Sam Varshavchik | Jul 30, 2002 6:47 pm | |
| Johannes Erdfelt | Jul 30, 2002 7:20 pm | |
| Tabor J. Wells | Jul 30, 2002 7:31 pm | |
| Sam Varshavchik | Jul 30, 2002 7:46 pm | |
| Juha Saarinen | Jul 30, 2002 8:05 pm | |
| Bill Michell | Jul 31, 2002 1:30 am | |
| Lukas Vesely | Jul 31, 2002 6:51 am | |
| Johannes Erdfelt | Jul 31, 2002 8:43 am | |
| Johannes Erdfelt | Jul 31, 2002 8:48 am | |
| Ben Rosengart | Jul 31, 2002 9:23 am | |
| Moshe Gurvich | Jul 31, 2002 9:32 am | |
| Lukas Vesely | Jul 31, 2002 9:36 am | |
| Lukas Vesely | Jul 31, 2002 9:36 am | |
| Lukas Vesely | Jul 31, 2002 9:36 am | |
| Lukas Vesely | Jul 31, 2002 9:36 am | |
| Lukas Vesely | Jul 31, 2002 10:12 am | |
| Anand Buddhdev | Jul 31, 2002 10:17 am | |
| Johannes Erdfelt | Jul 31, 2002 10:31 am | |
| Sam Varshavchik | Jul 31, 2002 2:41 pm | |
| Lukas Vesely | Aug 1, 2002 10:16 am | |
| Luc Brouard | Aug 6, 2002 12:34 pm |
| Subject: | Re: [courier-users] Re: MX lookup | |
|---|---|---|
| From: | Johannes Erdfelt (joha...@erdfelt.com) | |
| Date: | Jul 31, 2002 8:48:42 am | |
| List: | net.sourceforge.lists.courier-users | |
On Wed, Jul 31, 2002, Lukas Vesely <vese...@compik.fd.cvut.cz> wrote:
Cituji z emailu od Bill Michell <bi...@mics.org.uk>:
This sounds like it could usefully be used as an option to configure; something like: --with-exhaustive-dns-traversal WARNING: enabling this option could lead to an effective Denial of Service attack on your mail server if a remote
Yes, I agree - or more there could be a parameter that would contain a total number of MX records to try before deferring the message. Because normally the DNS server caches its records it got until the TTL expires - here we've seen it's 1 hour at hotmail so there's no chance the message gets delivered in less than 1hour...
While an option like this might be worthwile pursuing, your assertion that there's no chance the message will get delivered is absolutely wrong.
It's not that their configuration is broken and there is NO CHANCE of connecting and delivering a message to any of the MX's listed.
It's that the MX's are valid but not accepting messages RIGHT NOW and could very well accept messages the next second, next minute, next hour or any time period in between.
JE