Any ideas?
(the same email was successfully delivered to others)
------------------------------
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The mail system
<xxxxxx@sky.com>: host mx-eu.mail.am0.yahoodns.net[188.125.72.73] said:
421 4.7.0 [TSS04] Messages from 153.92.124.240 temporarily deferred due to
unexpected volume or user complaints - 4.16.55.1; see
https://postmaster.yahooinc.com/error-codes (in reply to MAIL FROM command)
<xxxxxx@yahoo.com>: host mta7.am0.yahoodns.net[98.136.96.77] said: 421 4.7.0
[TSS04] Messages from 153.92.124.240 temporarily deferred due to unexpected
volume or user complaints - 4.16.55.1; see
https://postmaster.yahooinc.com/error-codes (in reply to MAIL FROM command)
<xxxxxxx@aol.com>: host mx-aol.mail.gm0.yahoodns.net[98.136.96.93] said: 421
4.7.0 [TSS04] Messages from 153.92.124.240 temporarily deferred due to
unexpected volume or user complaints - 4.16.55.1; see
https://postmaster.yahooinc.com/error-codes (in reply to MAIL FROM command)
<xxxxxx@aol.com>: host mx-aol.mail.gm0.yahoodns.net[98.136.96.93] said: 421
4.7.0 [TSS04] Messages from 153.92.124.240 temporarily deferred due to
unexpected volume or user complaints - 4.16.55.1; see
https://postmaster.yahooinc.com/error-codes (in reply to MAIL FROM command)
<xxxx@glasstones.com>: host mx-biz.mail.am0.yahoodns.net[67.195.228.75] said:
421 4.7.0 [TSS04] Messages from 153.92.124.240 temporarily deferred due to
unexpected volume or user complaints - 4.16.55.1; see
https://postmaster.yahooinc.com/error-codes (in reply to MAIL FROM command)
