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Author Topic: TCP Restransmission issue  (Read 4794 times)
vlongjvc
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« on: Monday 28 June 2010, 07:36:04 pm »

My EFW (ugrade from 2.3 -> 2.4), I have experienced with TCP Restransmission when I send e-mail via SMTP. Below is information I captured by Wireshark:

298   4.778294   222...   10.x.x.x       SMTP   S: 220 <mail server address> ESMTP Service ready
299   4.778602   10.x.x.x    222...   SMTP   C: EHLO <hostname>
301   4.780919   222...   10.x.x.x       SMTP   S: 250-<mail server address> | 250-DSN | 250-8BITMIME | 250-PIPELINING | 250-HELP | 250-AUTH=LOGIN | 250-AUTH LOGIN DIGEST-MD5 PLAIN | 250-DELIVERBY 300 | 250 SIZE 10000000
302   4.781492   10.x.x.x   222...   SMTP   C: AUTH LOGIN
303   4.783905   222...   10.x.x.x   SMTP   S: 334 VXNlcm5hbWU6
304   4.784190   10.x.x.x   222...   SMTP   C: anZsLWVuZw==
305   4.786455   222...   10.x.x.x   SMTP   S: 334 UGFzc3dvcmQ6
306   4.786715   10.x.x.x   222...   SMTP   C: bnR4N3JqZWk=
308   4.832619   222...   10.x.x.x   SMTP   S: 235 LOGIN authentication successful
309   4.834791   10.x.x.x   222...   SMTP   C: MAIL FROM: <my e-mail address>
310   5.054429   10.x.x.x   222...   SMTP   C: MAIL FROM: <my e-mail address>
320   5.960196   10.x.x.x   222...   SMTP   [TCP Retransmission] C: MAIL FROM: <jmy e-mail address>
513   8.376839   10.x.x.x   222...   SMTP   [TCP Retransmission] C: MAIL FROM: <my e-mail address>
775   13.101384   10.x.x.x   222...   SMTP   [TCP Retransmission] C: MAIL FROM: <my e-mail address>
1030   17.932648   10.x.x.x   222...   SMTP   [TCP Retransmission] C: MAIL FROM: <my e-mail address>

After ajust MTU to 1400 --> still have problem
After ajust MTU to default --> OK

But after that the same problem happened again.

Have anyone had this issue like me?
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