script to extract all emails,domains,IP its MX record domains with IPS from email you send to. simply extract all this from the mail logs and create a postfix sender_access list marked as OK import os,sys import re import dns.resolver import socket import gzip from subprocess import call class Autopostwhite(): def __init__(self): self.maxlines = 10 self.save_file = 'sender_access' #self.save_file = '/etc/postfix/sender_access' path = "/var/log/" lines = self.get_text(path) emails = self.get_emails(lines) domain_ips = self.set_domain_ip(emails) email_domains = domain_ips[0] email_ips = domain_ips[1] mx_domains = self.get_mx(email_domains) mx_ips = self.set_mx_ip(mx_domains) self.save_whitelist(emails,email_domains,email_ips,mx_domains,mx_ips) self.create_postfix_db() def create_postfix_db(self): if(os.path.isfile(self.save_file)): call(["postmap", self.save_file]) def get_text(self,path): lines = [] for f in os.listdir(path): if(f.startswith('mail.log')): if(f.endswith('gz')): fz = gzip.open(path + f,'rb') lines += fz.readlines() else: fs = open(path + f, 'r') lines += fs.readlines() return lines def save_whitelist(self,emails,email_domains,email_ips,mx_domains,mx_ips): l = [] l.extend(emails) l.extend(email_domains) l.extend(mx_domains) l.extend(email_ips) l.extend(mx_ips) l = sorted(list(set(l))) s = '' if(os.path.isfile('reject_list.txt')): rf = open('reject_list.txt', 'r') rl = rf.readlines() for i in rl: entry = i.strip() if(entry): if(entry in l): l.remove(entry) s += str(entry) + " REJECT\n" for i in l: s += str(i) + " OK\n" f = open(self.save_file, 'w') f.write(s) f.close() def set_mx_ip(self,m): mxs = [] for i in m: try: ip = socket.gethostbyname(i) mxs.append(ip) except IOError, error: pass return mxs def get_mx(self,e): mxs = [] for i in e: answers = dns.resolver.query(i, 'MX') for rdata in answers: mxs.append(str(rdata.exchange)) return sorted(list(set(mxs))) def set_domain_ip(self,e): domains = [] ips = [] for i in e: a = i.split('@') try: ip = socket.gethostbyname(a[1]) domains.append(a[1]) ips.append(ip) except IOError, error: pass return [sorted(list(set(domains))),sorted(list(set(ips)))] def get_emails(self,lines): emails= [] x = 0 for l in lines: m1 = re.search(': to=<',l) m2 = re.search('postfix/smtp',l) if(m1 and m2): m3 = re.search(r'\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+',l) if(m3): email = m3.group().lower() emails.append(email) x +=1; if(x > self.maxlines): break return sorted(list(set(emails))) if __name__ == "__main__": a = Autopostwhite()

http://www.postfix.org/

below code does not work this one worked for me: import os,sys import re import dns.resolver import socket import gzip from subprocess import call class Autopostwhite(): def __init__(self): self.maxlines = 2000000 self.save_file = 'sender_access' #self.save_file = '/etc/postfix/sender_access' path = "/var/log/" lines = self.get_text(path) emails = self.get_emails(lines) domain_ips = self.set_domain_ip(emails) email_domains = domain_ips[0] email_ips = domain_ips[1] emails = domain_ips[2] mx_domains = self.get_mx(email_domains) mx_ips = self.get_mx_ip(mx_domains) self.save_whitelist(emails,email_domains,email_ips,mx_domains,mx_ips) self.create_postfix_db() def create_postfix_db(self): if(os.path.isfile(self.save_file)): call(["postmap", self.save_file]) def get_text(self,path): lines = [] for f in os.listdir(path): if(f.startswith('mail.log')): if(f.endswith('gz')): fz = gzip.open(path + f,'rb') lines.extend(fz.readlines()) else: fs = open(path + f, 'r') lines.extend(fs.readlines()) return lines def save_whitelist(self,emails,email_domains,email_ips,mx_domains,mx_ips): l = [] l.extend(emails) l.extend(email_domains) l.extend(email_ips) l.extend(mx_domains) l.extend(mx_ips) l = list(set(l)) s = '' if(os.path.isfile('reject_list.txt')): rf = open('reject_list.txt', 'r') rl = rf.readlines() for i in rl: entry = i.strip() if(entry): if(entry in l): l.remove(entry) s += str(entry) + " REJECT\n" l = set(l) for i in l: s += str(i) + " OK\n" f = open(self.save_file, 'w') f.write(s) f.close() def get_mx_ip(self,m): mxs = [] for i in m: try: ip = socket.gethostbyname(i) mxs.append(ip) except IOError, error: pass return sorted(list(set(mxs))) def get_mx(self,e): mxs = [] for i in e: try: answers = dns.resolver.query(i, 'MX') for rdata in answers: mxs.append(str(rdata.exchange)[:-1].lower()) except (dns.resolver.NoAnswer) as e: pass domains = list(set(mxs)) return sorted(domains) def set_domain_ip(self,e): domains = [] ips = [] emails = [] for i in e: a = i.split('@') try: ip = socket.gethostbyname(a[1]) domains.append(a[1].lower()) ips.append(ip) emails.append(i.lower()) except IOError, error: pass domains = list(set(domains)) ips = list(set(ips)) emails = list(set(emails)) return [sorted(domains),sorted(ips),sorted(emails)] def get_emails(self,lines): emails= [] x = 0 for l in lines: m1 = re.search(': to=<',l) m2 = re.search('postfix/smtp',l) if(m1 and m2): m3 = re.search(r'\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+',l) if(m3): email = m3.group().lower() emails.append(email) x +=1; if(x > self.maxlines): break return sorted(list(set(emails))) if __name__ == "__main__": a = Autopostwhite() 07.12.13

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