Tunnel is connected, but SMTP connections die.



  • I'm new to IPSEC, so I'm not sure if the below log activity is normal. I'm able to ping, tracert, and telnet to the server on the other side, but my SMTP connections seem to die almost immediately and I only get a tiny snippet of the first message...

    Jun 15 09:46:21 charon 15[IKE] <con1000|100> nothing to initiate
    Jun 15 09:46:21 charon 15[IKE] <con1000|100> activating new tasks
    Jun 15 09:46:21 charon 15[ENC] <con1000|100> parsed INFORMATIONAL_V1 request 1189523789 [ HASH N(DPD_ACK) ]
    Jun 15 09:46:21 charon 15[NET] <con1000|100> received packet: from xxx.xxx.xxx.xxx[500] to yyy.yyy.yyy.yyy[500] (108 bytes)
    Jun 15 09:46:21 charon 15[IKE] <con1000|100> nothing to initiate
    Jun 15 09:46:21 charon 15[IKE] <con1000|100> activating new tasks
    Jun 15 09:46:21 charon 15[NET] <con1000|100> sending packet: from yyy.yyy.yyy.yyy[500] to xxx.xxx.xxx.xxx[500] (108 bytes)
    Jun 15 09:46:21 charon 15[ENC] <con1000|100> generating INFORMATIONAL_V1 request 551166384 [ HASH N(DPD) ]
    Jun 15 09:46:21 charon 15[IKE] <con1000|100> activating ISAKMP_DPD task
    Jun 15 09:46:21 charon 15[IKE] <con1000|100> activating new tasks
    Jun 15 09:46:21 charon 15[IKE] <con1000|100> queueing ISAKMP_DPD task
    Jun 15 09:46:21 charon 15[IKE] <con1000|100> sending DPD request
    Jun 15 09:46:11 charon 12[IKE] <con1000|100> nothing to initiate
    Jun 15 09:46:11 charon 12[IKE] <con1000|100> activating new tasks
    Jun 15 09:46:11 charon 12[ENC] <con1000|100> parsed INFORMATIONAL_V1 request 2503333259 [ HASH N(DPD_ACK) ]
    Jun 15 09:46:11 charon 12[NET] <con1000|100> received packet: from xxx.xxx.xxx.xxx[500] to yyy.yyy.yyy.yyy[500] (108 bytes)
    Jun 15 09:46:11 charon 12[IKE] <con1000|100> nothing to initiate
    Jun 15 09:46:11 charon 12[IKE] <con1000|100> activating new tasks
    Jun 15 09:46:11 charon 12[NET] <con1000|100> sending packet: from yyy.yyy.yyy.yyy[500] to xxx.xxx.xxx.xxx[500] (108 bytes)
    Jun 15 09:46:11 charon 12[ENC] <con1000|100> generating INFORMATIONAL_V1 request 3817553885 [ HASH N(DPD) ]
    Jun 15 09:46:11 charon 12[IKE] <con1000|100> activating ISAKMP_DPD task
    Jun 15 09:46:11 charon 12[IKE] <con1000|100> activating new tasks
    Jun 15 09:46:11 charon 12[IKE] <con1000|100> queueing ISAKMP_DPD task
    Jun 15 09:46:11 charon 12[IKE] <con1000|100> sending DPD request
    Jun 15 09:46:01 charon 12[IKE] <con1000|100> nothing to initiate
    Jun 15 09:46:01 charon 12[IKE] <con1000|100> activating new tasks
    Jun 15 09:46:01 charon 12[ENC] <con1000|100> parsed INFORMATIONAL_V1 request 1147009971 [ HASH N(DPD_ACK) ]
    Jun 15 09:46:01 charon 12[NET] <con1000|100> received packet: from xxx.xxx.xxx.xxx[500] to yyy.yyy.yyy.yyy[500] (108 bytes)
    Jun 15 09:46:01 charon 12[IKE] <con1000|100> nothing to initiate
    Jun 15 09:46:01 charon 12[IKE] <con1000|100> activating new tasks
    Jun 15 09:46:01 charon 12[NET] <con1000|100> sending packet: from yyy.yyy.yyy.yyy[500] to xxx.xxx.xxx.xxx[500] (108 bytes)
    Jun 15 09:46:01 charon 12[ENC] <con1000|100> generating INFORMATIONAL_V1 request 230279349 [ HASH N(DPD) ]
    Jun 15 09:46:01 charon 12[IKE] <con1000|100> activating ISAKMP_DPD task
    Jun 15 09:46:01 charon 12[IKE] <con1000|100> activating new tasks
    Jun 15 09:46:01 charon 12[IKE] <con1000|100> queueing ISAKMP_DPD task
    Jun 15 09:46:01 charon 12[IKE] <con1000|100> sending DPD request
    Jun 15 09:45:51 charon 12[IKE] <con1000|100> nothing to initiate
    Jun 15 09:45:51 charon 12[IKE] <con1000|100> activating new tasks
    Jun 15 09:45:51 charon 12[ENC] <con1000|100> parsed INFORMATIONAL_V1 request 1786490073 [ HASH N(DPD_ACK) ]
    Jun 15 09:45:51 charon 12[NET] <con1000|100> received packet: from xxx.xxx.xxx.xxx[500] to yyy.yyy.yyy.yyy[500] (108 bytes)
    Jun 15 09:45:51 charon 12[IKE] <con1000|100> nothing to initiate
    Jun 15 09:45:51 charon 12[IKE] <con1000|100> activating new tasks
    Jun 15 09:45:51 charon 12[NET] <con1000|100> sending packet: from 162.247.170.11[500] to xxx.xxx.xxx.xxx[500] (108 bytes)
    Jun 15 09:45:51 charon 12[ENC] <con1000|100> generating INFORMATIONAL_V1 request 2615925728 [ HASH N(DPD) ]
    Jun 15 09:45:51 charon 12[IKE] <con1000|100> activating ISAKMP_DPD task
    Jun 15 09:45:51 charon 12[IKE] <con1000|100> activating new tasks
    Jun 15 09:45:51 charon 12[IKE] <con1000|100> queueing ISAKMP_DPD task
    Jun 15 09:45:51 charon 12[IKE] <con1000|100> sending DPD request
    Jun 15 09:45:41 charon 09[IKE] <con1000|100> nothing to initiate
    Jun 15 09:45:41 charon 09[IKE] <con1000|100> activating new tasks
    Jun 15 09:45:41 charon 09[ENC] <con1000|100> parsed INFORMATIONAL_V1 request 2447661075 [ HASH N(DPD_ACK) ]
    Jun 15 09:45:41 charon 09[NET] <con1000|100> received packet: from xxx.xxx.xxx.xxx[500] to yyy.yyy.yyy.yyy[500] (108 bytes)
    Jun 15 09:45:41 charon 09[IKE] <con1000|100> nothing to initiate
    Jun 15 09:45:41 charon 09[IKE] <con1000|100> activating new tasks
    Jun 15 09:45:41 charon 09[NET] <con1000|100> sending packet: from yyy.yyy.yyy.yyy[500] to xxx.xxx.xxx.xxx[500] (108 bytes)
    Jun 15 09:45:41 charon 09[ENC] <con1000|100> generating INFORMATIONAL_V1 request 1385272858 [ HASH N(DPD) ]
    Jun 15 09:45:41 charon 09[IKE] <con1000|100> activating ISAKMP_DPD task
    Jun 15 09:45:41 charon 09[IKE] <con1000|100> activating new tasks
    Jun 15 09:45:41 charon 09[IKE] <con1000|100> queueing ISAKMP_DPD task
    Jun 15 09:45:41 charon 09[IKE] <con1000|100> sending DPD request
    Jun 15 09:45:31 charon 12[IKE] <con1000|100> nothing to initiate
    Jun 15 09:45:31 charon 12[IKE] <con1000|100> activating new tasks
    Jun 15 09:45:31 charon 12[ENC] <con1000|100> parsed INFORMATIONAL_V1 request 1183940366 [ HASH N(DPD_ACK) ]
    Jun 15 09:45:31 charon 12[NET] <con1000|100> received packet: from xxx.xxx.xxx.xxx[500] to yyy.yyy.yyy.yyy[500] (108 bytes)
    Jun 15 09:45:31 charon 12[IKE] <con1000|100> nothing to initiate
    ...