--- Stuart Henderson [Mon, Mar 23, 2009 at 01:54:44PM +0000]: --- > On 2009-03-23, jmc <j...@cosmicnetworks.net> wrote: > >> In getting our low traffic email server running, the first thing I > >> noticed while following the logs that sites like gmail et al will > >> retry a message from a different host. Sometimes gmail will send > >> once, try again very soon again from the same host and then queue it, > >> but the queued email might be sent by a different server. > > > > check greylisting.org. > > it's useless. it doesn't list common pool senders from a block of /24 > or less (i.e. most of them) and it's not updated regularly. dnswl.org is > better but it's a damn big list and if you load it into a PF table, even > if you aggregate the addresses, it uses a huge chunk of kernel memory.
thanks for the tip on that, Stuart. i had the feeling the info there was a bit long in the tooth as well. dealing with the round-robin/common pool smtp hosts is something i've not been completely happy with in my setup, so maybe i'll revisit how i handle things here.
