ovh_mail_out_list.py

#!/usr/bin/env python

import dns.resolver

main_domain = "mail-out.ovh.net."
cur_mailout=1
while True:
        try:
                mail_out_answer = dns.resolver.query('mo' + str(cur_mailout) + '.' + main_domain,'A')
        except dns.resolver.NXDOMAIN:
                break

        for cur_answer in mail_out_answer:
                # Let's do the same with "sub mailout" (x.moY.mail-out.ovh.net)
                print(cur_answer)
                cur_sub_mailout=1
                while True:
                        try:
                                sub_mail_out_answer = dns.resolver.query(str(cur_sub_mailout) + '.mo' + str(cur_mailout) + '.' + main_domain,'A')
                        except dns.resolver.NXDOMAIN:
                                break
                        for cur_sub_answer in sub_mail_out_answer:
                                print(cur_sub_answer)

                        cur_sub_mailout = cur_sub_mailout + 1
                cur_mailout = cur_mailout + 1