>>>>> "Philip" == Philip Hazel <ph10@???> writes:
Philip> On Sat, 27 Jul 1996, Alan Barrett wrote:
>> sender_net_accept_relay = "134.133.0.0/255.255.0.0"
>> # sender_host_reject_relay is undefined
Philip> On Sun, 28 Jul 1996, Alan Barrett wrote:
>> I am pretty sure that the IP address goes through gethostbyaddr before
>> being matched against the sender_host_*_relay lists. Maybe you linked
>> with a bad gethostbyaddr()?
Philip> Yes, it uses gethostbyaddr. I certainly don't trust any host name that
Philip> comes from the HELO command. However, the name that is written in the
Philip> log is the one HELO gives. Exim does not look up the FQDN unless it
Philip> needs it, in order not to waste effort.
Nonetheless, this doesn't explain why my original attempt failed. I
had used:
sender_host_reject_relay = *
Now gethostbyaddr for host "farhadspc" returns
farhadspc.ctd.comsat.com,
nslookup farhadspc
Name: farhadspc.ctd.comsat.com
Address: 134.133.40.57
neal:/src/users/neal/% nslookup 134.133.40.57
Name: FarhadsPC.ctd.comsat.com
Address: 134.133.40.57
and local_domains is:
local_domains = ctd.comsat.com:comsat.com:neal.ctd.comsat.com
So why was fahadspc rejected?
Philip> However, to do what Neal wants is cheaper if you use Alan's suggested
Philip> config above, that uses only sender_net_accept_relay, since then Exim
Philip> does not have to call gethostbyaddr at all.
Yeah, but really we have a few stray class-c nets also, so hard-coding
them all goes against the purist in me.
