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7.7

Router not forwarding SMTP packets

Asked by kevin1983 in Network Routers, DSL Lines / Cable Internet, Simple Mail Transfer Protocol (SMTP)

Hi,

We have a netgear router (Netgear DG834 v2 with firmware version 3.01.38) which contains a firewall rule to forward SMTP traffic onto our Sonicwall email security 3000 box so that email can be filtered for spam, good email can then sent to our email server.

However the router doesnt appear to forward SMTP packets. From looking at the logs on the router it does appear that the SMTP traffic is reaching the router and that the firewall rule that should forward it to the sonicwall box is being applied.

The SMTP traffic never seems to leave the router. We can connect to the internet fine through the router. We have restored the router to factory settings and reconfigured it but still no joy.

Below is a sample of the log file on the router, any ideas on how to resolve this issue?
A sample section of the log file. (the date/time wasnt set correctly after router settings were restored)

Sun, 2002-09-08 12:50:58 - TCP Packet - Source:117.193.233.47,1429 Destination:87.127.3.49,25 - [SMTP rule match]
Sun, 2002-09-08 12:51:02 - TCP Packet - Source:122.164.85.173,2367 Destination:87.127.3.49,25 - [SMTP rule match]
Sun, 2002-09-08 12:51:06 - TCP Packet - Source:81.152.38.46,4584 Destination:87.127.3.49,25 - [SMTP rule match]
Sun, 2002-09-08 12:51:17 - TCP Packet - Source:201.231.93.23,64226 Destination:87.127.3.49,25 - [SMTP rule match]
Sun, 2002-09-08 12:51:31 - TCP Packet - Source:122.168.50.118,1750 Destination:87.127.3.49,25 - [SMTP rule match]
Sun, 2002-09-08 12:51:32 - TCP Packet - Source:122.168.50.118,1758 Destination:87.127.3.49,25 - [SMTP rule match]
Sun, 2002-09-08 12:52:03 - TCP Packet - Source:200.50.165.129,62411 Destination:87.127.3.49,25 - [SMTP rule match]
Sun, 2002-09-08 12:52:17 - TCP Packet - Source:125.24.152.50,11160 Destination:87.127.3.49,25 - [SMTP rule match]
Sun, 2002-09-08 12:52:35 - TCP Packet - Source:124.43.203.1,3483 Destination:87.127.3.49,25 - [SMTP rule match]
Sun, 2002-09-08 12:52:51 - Administrator login successful - IP:200.200.100.217
Sun, 2002-09-08 12:52:51 - TCP Packet - Source:218.168.203.179,2041 Destination:87.127.3.49,25 - [SMTP rule match]
Sun, 2002-09-08 12:52:51 - TCP Packet - Source:88.4.75.21,17833 Destination:87.127.3.49,25 - [SMTP rule match]

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20100204-EE-VQP-115 - Hierarchy / EE_QW_3_20080625

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Router not forwarding SMTP packets

Asked by kevin1983 in Network Routers, DSL Lines / Cable Internet, Simple Mail Transfer Protocol (SMTP)

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