hello, I can’t send to/from Yahoo Mail addresses… this is the email i receive from postmaster "4.7.0 [TSS04] Messages from xx.xx.xx.xx temporarily deferred due to user complaints - 4.16.55.1; see https://help.yahoo.com/kb/postmaster/SLN3434.html "…
could you help me please.
thanks
Hello @iuliana.pusca,
Did you try to see whether the IP address that your email server is running with isn’t blacklisted?
Try using https://mxtoolbox.com/blacklists.aspx and see the results.
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