Hello everyone, In hope to get assistance from a person at Cox I am reviving this thread. As Andy was experiencing that before, we also see repetitive CXCNCT errors. https://www.cox.com/residential/support/email-error-codes.html says that they support up to 10 concurrent connections and we have max-connect-limit 8 set as default on our PMTA configuration. We also lowered max connection limit to 4 just for cox.net mailboxes, yet that does not seem to change anything at all.
Out of 470k attempts in last 24 hours to send mails 455k were rejected as tq errors with CXCNCT as the reason and 6.4k were transient/deferred with CXMXRT as the reason. Out of 470k attempts 8.5k mails were delivered and 221 bounced. We could really use some help off-list as none of our attempts to contact in the last week got us a reply or fix. Thanks in advance! Best regards, Vytis
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