On 02/21/15 18:29, Martin Brandenburg wrote:
Edgar Pettijohn wrote:
On 02/21/15 18:09, trondd wrote:
On 2015-02-21 18:57, Martin Brandenburg wrote:
That doesn't mean you can't find the information somewhere else.
I just did this for gmail by simply sending a couple emails, letting
gmail retry for a couple hours and grabbing the IPs out of spamdb.
Tim.
$ host yahoo.com
yahoo.com has address 98.138.253.109
yahoo.com has address 98.139.183.24
yahoo.com has address 206.190.36.45
yahoo.com mail is handled by 1 mta5.am0.yahoodns.net.
yahoo.com mail is handled by 1 mta6.am0.yahoodns.net.
yahoo.com mail is handled by 1 mta7.am0.yahoodns.net.
$ nslookup mta5.am0.yahoodns.net
Server: 192.168.1.1
Address: 192.168.1.1#53
Non-authoritative answer:
Name: mta5.am0.yahoodns.net
Address: 66.196.118.34
Name: mta5.am0.yahoodns.net
Address: 66.196.118.36
Name: mta5.am0.yahoodns.net
Address: 98.136.216.25
Name: mta5.am0.yahoodns.net
Address: 66.196.118.35
Name: mta5.am0.yahoodns.net
Address: 98.136.216.26
Name: mta5.am0.yahoodns.net
Address: 98.138.112.35
Name: mta5.am0.yahoodns.net
Address: 98.138.112.32
Name: mta5.am0.yahoodns.net
Address: 98.138.112.37
so on and so forth for the following mta's. add the ip's to your
whitelist and it should be good to go.
Just because you send mail to Yahoo through those IPs doesn't mean they
send mail to you from those IPs. It's not unheard of for incoming and
outgoing mail to go through different servers once you get to a certain
size.
(It may well be that they do go through the same servers. A lot of this
is guesswork anyway without information direct from the source.)
-- Martin
I agree its possible, but its a good place to start.
$ dig yahoo.com mx
; <<>> DiG 9.4.2-P2 <<>> yahoo.com mx
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24018
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;yahoo.com. IN MX
;; ANSWER SECTION:
yahoo.com. 1000 IN MX 1 mta7.am0.yahoodns.net.
yahoo.com. 1000 IN MX 1 mta5.am0.yahoodns.net.
yahoo.com. 1000 IN MX 1 mta6.am0.yahoodns.net.
no need to cc me i'm on the list
