Hi,
My ISP (ovh) is complaining about my postfix servers doing wrong ARP
demand, do you have any idea of what can cause this in my postfix
configuration ?
188.165.55.92 : is one of the server ip (ip failover)
Thu Jul 8 02:03:32 2010 : arp who-has 169.254.140.241 tell 188.165.55.92
Thu Jul 8 03:27:22 2010 : arp who-has 169.254.140.241 tell 188.165.55.92
Thu Jul 8 09:34:55 2010 : arp who-has 169.254.140.241 tell 188.165.55.92
Thu Jul 8 10:07:53 2010 : arp who-has 169.254.140.241 tell 188.165.55.92
Thu Jul 8 10:57:22 2010 : arp who-has 169.254.140.241 tell 188.165.55.92
Thu Jul 8 12:20:14 2010 : arp who-has 169.254.140.241 tell 188.165.55.92
Thu Jul 8 13:44:34 2010 : arp who-has 169.254.140.241 tell 188.165.55.92
Thu Jul 8 13:44:34 2010 : arp who-has 169.254.140.241 tell 188.165.55.92
Thu Jul 8 15:07:53 2010 : arp who-has 169.254.140.241 tell 188.165.55.92
Thu Jul 8 16:30:14 2010 : arp who-has 169.254.140.241 tell 188.165.55.92
extract from tcpdump :
19:43:20.837829 IP cdns.ovh.net.domain > ovh63.bpreducer.com.60276:
49866 3/3/1 A 169.254.140.241,[|domain]
19:43:20.838443 arp who-has 169.254.140.241 tell ovh63.bpreducer.com
19:43:20.840082 arp reply 169.254.140.241 is-at 00:24:c3:84:04:00 (oui
Unknown)
19:43:20.840087 IP ovh63.bpreducer.com.59549 > 169.254.140.241.smtp: S
1213354010:1213354010(0) win 5840 <mss 1460,sackOK,timestamp 759487196
0,nop,wscale 6>
19:43:29.834748 IP ovh63.bpreducer.com.59549 > 169.254.140.241.smtp: S
1213354010:1213354010(0) win 5840 <mss 1460,sackOK,timestamp 759489446
0,nop,wscale 6>
19:43:41.834247 IP ovh63.bpreducer.com.59549 > 169.254.140.241.smtp: S
1213354010:1213354010(0) win 5840 <mss 1460,sackOK,timestamp 759492446
0,nop,wscale 6>
21:06:28.352789 IP cdns.ovh.net.domain > ovh63.bpreducer.com.36382: 7517
3/3/1 A 169.254.140.241,[|domain]
21:06:58.386416 arp who-has 169.254.140.241 tell ovh63.bpreducer.com
21:06:58.387888 arp reply 169.254.140.241 is-at 00:24:c3:84:04:00 (oui
Unknown)
21:06:58.387899 IP ovh63.bpreducer.com.36937 > 169.254.140.241.smtp: S
2588304519:2588304519(0) win 5840 <mss 1460,sackOK,timestamp 760741583
0,nop,wscale 6>
21:07:01.382251 IP ovh63.bpreducer.com.36937 > 169.254.140.241.smtp: S
2588304519:2588304519(0) win 5840 <mss 1460,sackOK,timestamp 760742333
0,nop,wscale 6>
21:07:07.382750 IP ovh63.bpreducer.com.36937 > 169.254.140.241.smtp: S
2588304519:2588304519(0) win 5840 <mss 1460,sackOK,timestamp 760743833
0,nop,wscale 6>
21:07:19.382236 IP ovh63.bpreducer.com.36937 > 169.254.140.241.smtp: S
2588304519:2588304519(0) win 5840 <mss 1460,sackOK,timestamp 760746833
0,nop,wscale 6>
if you need the postfix conf files, I will send it in.
Thanks for any help ....
Stéphane
