I got 6 gmail accounts and tried to send out, but only 1 mail got send.
Burst mode
Delivery: Singly
Precedence :none
+_ 24 deliveries/hour (576/day) 6 servers
Connections 1
[01] 3/13 07:46:12 ~ Opening connection for delivery...
[01] 3/13 07:46:12 ~ Connecting to smtp.gmail.com Port:587
[01] 3/13 07:46:12 ~ Connected
[01] 3/13 07:46:12 220 mx.google.com ESMTP j7sm7066569igq.12
[01] 3/13 07:46:12 > EHLO [192.168.254.100]
[01] 3/13 07:46:12 250-mx.google.com at your service, [222.127.246.110]
250-SIZE 35882577
250-8BITMIME
250-STARTTLS
250 ENHANCEDSTATUSCODES
[01] 3/13 07:46:12 > STARTTLS
[01] 3/13 07:46:13 220 2.0.0 Ready to start TLS
[01] 3/13 07:46:13 ~ Connected
[01] 3/13 07:46:13 > EHLO [192.168.254.100]
[01] 3/13 07:46:13 250-mx.google.com at your service, [222.127.246.110]
250-SIZE 35882577
250-8BITMIME
250-AUTH LOGIN PLAIN XOAUTH
250 ENHANCEDSTATUSCODES
[01] 3/13 07:46:13 > AUTH LOGIN
[01] 3/13 07:46:14 334 VXNlcm5hbWU6
[01] 3/13 07:46:14 > [email protected]
[01] 3/13 07:46:14 334 UGFzc3dvcmQ6
[01] 3/13 07:46:14 > **********
[01] 3/13 07:46:14 235 2.7.0 Accepted
[01] 3/13 07:46:14 > MAIL FROM:<[email protected]>
[01] 3/13 07:46:15 250 2.1.0 OK j7sm7066569igq.12
[01] 3/13 07:46:15 > RCPT TO:<[email protected]> [1/9920]
[01] 3/13 07:46:15 250 2.1.5 OK j7sm7066569igq.12
[01] 3/13 07:46:15 > DATA
[01] 3/13 07:46:16 354 Go ahead j7sm7066569igq.12
[01] 3/13 07:46:16 ~ Sending message
[01] 3/13 07:46:16 ~ with ID <[email protected]>
[01] 3/13 07:46:16 ~ To [email protected]@yahoo.com
[01] 3/13 07:46:17 250 2.0.0 OK 1331595974 j7sm7066569igq.12
[01] 3/13 07:46:17 ~ Stage 3 dispatch done
[01] 3/13 07:46:17 ~ Delay of 154s [00:02:34]
[01] 3/13 07:46:17 > QUIT
[01] 3/13 07:46:17 221 2.0.0 closing connection j7sm7066569igq.12
[01] 3/13 07:46:17 ~ Stage 4 dispatch done
[01] 3/13 07:46:17 ~ Next Delivery in 00:02:34
[01] 3/13 07:48:52 220 mx.google.com ESMTP h9sm22925961obr.20
[01] 3/13 07:50:52 *** SMTP TIME-OUT 1 - 120 s
[01] 3/13 07:50:52 --> Reconnecting attempt 1 of 5
[01] 3/13 07:52:52 *** SMTP TIME-OUT 2 - 120 s
[01] 3/13 07:52:52 --> Reconnecting attempt 2 of 5
Burst mode
Delivery: Singly
Precedence :none
+_ 24 deliveries/hour (576/day) 6 servers
Connections 1
[01] 3/13 07:46:12 ~ Opening connection for delivery...
[01] 3/13 07:46:12 ~ Connecting to smtp.gmail.com Port:587
[01] 3/13 07:46:12 ~ Connected
[01] 3/13 07:46:12 220 mx.google.com ESMTP j7sm7066569igq.12
[01] 3/13 07:46:12 > EHLO [192.168.254.100]
[01] 3/13 07:46:12 250-mx.google.com at your service, [222.127.246.110]
250-SIZE 35882577
250-8BITMIME
250-STARTTLS
250 ENHANCEDSTATUSCODES
[01] 3/13 07:46:12 > STARTTLS
[01] 3/13 07:46:13 220 2.0.0 Ready to start TLS
[01] 3/13 07:46:13 ~ Connected
[01] 3/13 07:46:13 > EHLO [192.168.254.100]
[01] 3/13 07:46:13 250-mx.google.com at your service, [222.127.246.110]
250-SIZE 35882577
250-8BITMIME
250-AUTH LOGIN PLAIN XOAUTH
250 ENHANCEDSTATUSCODES
[01] 3/13 07:46:13 > AUTH LOGIN
[01] 3/13 07:46:14 334 VXNlcm5hbWU6
[01] 3/13 07:46:14 > [email protected]
[01] 3/13 07:46:14 334 UGFzc3dvcmQ6
[01] 3/13 07:46:14 > **********
[01] 3/13 07:46:14 235 2.7.0 Accepted
[01] 3/13 07:46:14 > MAIL FROM:<[email protected]>
[01] 3/13 07:46:15 250 2.1.0 OK j7sm7066569igq.12
[01] 3/13 07:46:15 > RCPT TO:<[email protected]> [1/9920]
[01] 3/13 07:46:15 250 2.1.5 OK j7sm7066569igq.12
[01] 3/13 07:46:15 > DATA
[01] 3/13 07:46:16 354 Go ahead j7sm7066569igq.12
[01] 3/13 07:46:16 ~ Sending message
[01] 3/13 07:46:16 ~ with ID <[email protected]>
[01] 3/13 07:46:16 ~ To [email protected]@yahoo.com
[01] 3/13 07:46:17 250 2.0.0 OK 1331595974 j7sm7066569igq.12
[01] 3/13 07:46:17 ~ Stage 3 dispatch done
[01] 3/13 07:46:17 ~ Delay of 154s [00:02:34]
[01] 3/13 07:46:17 > QUIT
[01] 3/13 07:46:17 221 2.0.0 closing connection j7sm7066569igq.12
[01] 3/13 07:46:17 ~ Stage 4 dispatch done
[01] 3/13 07:46:17 ~ Next Delivery in 00:02:34
[01] 3/13 07:48:52 220 mx.google.com ESMTP h9sm22925961obr.20
[01] 3/13 07:50:52 *** SMTP TIME-OUT 1 - 120 s
[01] 3/13 07:50:52 --> Reconnecting attempt 1 of 5
[01] 3/13 07:52:52 *** SMTP TIME-OUT 2 - 120 s
[01] 3/13 07:52:52 --> Reconnecting attempt 2 of 5