Hi all, Lately we (and some other ESPs) have been noticing this one error for the single MX record of these domains: 554 mx5.vodafonemail.de ESMTP not accepting connections These errors seem to appear at random throughout all of our infrastructure and in the last 7 days out of 5M+ email volume 8.46% emails have bounces with this error.
In addition to that, this week we have also noticed some deferral/transient errors like this: smtp;452 4.3.1 Insufficient system storage After few days it went away. Is there something going on this network internally and the error should go away by itself or is there something that we can do to fix it on our end? If there is a person here from this network, feel free to get back to me off-list. Best regards, Vytis Marciulionis Emarsys
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