Deliverability to cox.net

Emails Sent to cox.net: 3,380,792

Open Rate to cox.net: 315,279 (9.3%)

Date range:
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Sent vs Opens for cox.net

Date Sent Opens Open Rate
10/23/2020 7,370 127 0.0%
10/22/2020 3,665 171 0.0%
10/21/2020 4,802 204 0.0%
10/20/2020 3,305 124 0.0%
10/19/2020 4,104 182 0.0%
10/18/2020 1,822 110 0.0%
10/17/2020 2,364 125 0.0%
10/16/2020 3,388 266 0.0%
10/15/2020 3,565 134 0.0%
10/14/2020 4,047 217 0.0%
10/13/2020 3,451 215 0.0%
10/12/2020 3,225 183 0.0%
10/11/2020 1,829 111 0.0%
10/10/2020 1,752 108 0.0%
10/9/2020 3,148 294 0.0%
10/8/2020 2,250 183 0.0%
10/7/2020 2,815 186 0.0%
10/6/2020 4,224 217 0.0%
10/5/2020 4,960 241 0.0%
10/4/2020 1,271 115 0.0%
10/3/2020 1,486 81 0.0%
10/2/2020 2,743 326 0.0%
10/1/2020 3,951 231 0.0%
9/30/2020 3,688 220 0.0%
9/29/2020 2,370 183 0.0%
9/28/2020 2,360 197 0.0%
9/27/2020 1,282 100 0.0%
9/26/2020 1,279 106 0.0%
9/25/2020 3,792 218 0.0%
9/24/2020 3,487 168 0.0%

Blocks from cox.net

Message Count
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/50.31.63.79 379
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/50.31.63.80 364
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/167.89.100.244 331
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/167.89.100.244 267
Message rejected. See https://support.google.com/mail/answer/69585 140
550 5.1.0 sender rejected. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 88
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/167.89.100.167 68
550 5.1.0 149.72.224.98 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 66
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/50.31.63.79 47
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/50.31.63.80 39
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/50.31.63.190 24
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/167.89.100.125 20
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/167.89.12.138 19
452 4.1.0 sender rejected. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 19
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/167.89.100.168 9
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/167.89.100.167 7
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/50.31.63.190 7
550 5.1.1 Recipient address rejected: User does not exist. 6
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/50.31.49.41 6
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/167.89.24.164 6
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/167.89.100.168 4
452 4.1.0 209.85.167.196 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 3
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/50.31.49.42 3
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/167.89.100.13 2
452 4.1.0 209.85.167.195 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 2
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/167.89.17.173 2
452 4.1.0 209.85.167.193 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 2
452 4.1.0 209.85.167.194 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 recipient rejected. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/167.89.100.132 1
554 cmsmtp Connection Rejected - see http://www.spamhaus.org/query/ip/50.31.63.74 1
452 4.1.0 209.85.166.196 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1

Bounces from cox.net

Message Count
550 5.1.1 Recipient address rejected: User does not exist. 2,865
421 cmsmtp 149.72.224.98 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 435
421 cmsmtp too many sessions from 167.89.100.244. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 99
552 5.2.2 Quota exceeded 85
554 cmsmtp 167.89.100.226 is listed on Cloudmark Please visit https://csi.cloudmark.com/en/reset?ip=167.89.100.226 76
421 cmsmtp 50.31.63.79 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 31
421 cmsmtp too many sessions from 167.89.100.226. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 27
452 4.1.0 server temporarily unavailable. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 26
421 cmsmtp 50.31.63.80 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 20
421 cmsmtp 149.72.128.25 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 17
552 5.2.0 sender rejected. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 13
552 5.2.3 message size exceeds fixed maximum message size 10
421 cmsmtp too many sessions from 167.89.100.243. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 7
421 cmsmtp too many sessions from 167.89.100.168. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 6
421 cmsmtp too many sessions from 167.89.100.167. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 5
421 cmsmtp 167.89.12.138 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 5
Email was deferred due to the following reason: 4
421 cmsmtp too many sessions from 50.31.63.80. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 4
421 cmsmtp too many sessions from 167.89.12.138. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 3
421 cmsmtp too many sessions from 167.89.17.173. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 2
421 recipient rejected. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 2
450 4.7.0 too long without DATA command 2
421 cmsmtp 167.89.100.243 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 2
421 cmsmtp too many sessions from 50.31.63.190. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 2
421 cmsmtp too many sessions from 50.31.63.79. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 2
550 5.1.0 sender rejected. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
554 5.2.2 mailbox full; Failed to process message due to a permanent exception with message The process failed to get the correct properties. 0.35250EE65, 1.36674, 1.61250, 1.45378, 1.44866, 1.36674, 1.61250, 1.45378, 1.44866, 1.36674, 1.61250, 1.45378, 1.44866B000000, 1.36674:A1000000, 1.61250, 1.45378, 1.44866, 1.36674, 1.61250, 1.45378, 1.44866, 1.36674, 1.61250, 1.45378, 1.44866, 16.55847D010000, 17.43559B6030000000000000900000000000000, 20.52176F698D2000702014004A67, 20.50032F698D901710102B 1
421 cmsmtp too many sessions from 167.89.100.132. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
421 cmsmtp too many sessions from 167.89.47.189. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
550 5.1.8 Access denied, bad outbound sender AS 1
421 cmsmtp 167.89.24.164 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
SMTP; 550 5.1.1 Recipient address rejected: User does not exist. 1
421 cmsmtp 167.89.51.149 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1
554 cmsmtp 167.89.24.164 is listed on Cloudmark Please visit https://csi.cloudmark.com/en/reset?ip=167.89.24.164 1
421 cmsmtp 167.89.17.173 blocked. Refer to Error Codes section at https://www.cox.com/residential/support/email-error-codes.html 1

Methodology

Send and open statistics are updated daily. Bounces and blocks are updated in real-time. Every day, open statistics are updated for the last 14 days. Generally, you'll notice an increase of an open rate for a domain for a day over the course of 14 days, since not all open events occur the same day an email is sent. That means that open rate data is tied to the actual emails sent on a particular day.

Bounce and block codes are the codes as returned by the remote SMTP server after having been de-personalized. Meaning, unique identifiers present in SMTP codes are removed so that SMTP responses can be grouped for analysis. In certain cases, such as when the email is being relayed through an intermediary SMTP server, the remote SMTP server may not be the same as the MX record for the domain. SMTP codes are categorized as "bounces" vs "blocks" by internal human review. Bounces generally indicate an invalid email address. Blocks generally indicate a rejection of the email message but a valid email address.