As per the OP, this is an issue of relaying being rejected. It has nothing to do with Spamcop.
535 Authentication credentials invalid (SMTP AUTH failed with the remote server) On Mon, Apr 7, 2014 at 8:34 AM, Mike N <[email protected]> wrote: > According to my hosting company, the problem is that one of google's server > (that you are assigned to) is being blocked, in my case it is by spamcop - > I've been struggling with the same issue for a few days now. > > Don't know how to escalate this with google but it needs sorting. > > Mike > > > On Sunday, 5 January 2014 01:24:53 UTC+8, Nelson Ingersoll wrote: >> >> For the last several days I have been unable to send any email. All of my >> out going email fails with this error. I do not understand why google would >> be trying to authenticate to smtp.mail.com. I do forward email FROM >> mail.com to my gmail account. I am perplexed. Can anyone offer any >> explanation why this is happening and what I might be doing to cause it? It >> is driving me nucking futz! >> >> Nelson >> >> >> Technical details of permanent failure: >> Google tried to deliver your message, but it was rejected by the relay >> smtp.mail.com by smtp.mail.com. [74.208.5.15]. >> >> The error that the other server returned was: >> 535 Authentication credentials invalid (SMTP AUTH failed with the remote >> server) > > -- > You received this message because you are subscribed to the Google Groups > "Gmail-Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/gmail-users. > For more options, visit https://groups.google.com/d/optout. -- Marko -- You received this message because you are subscribed to the Google Groups "Gmail-Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/gmail-users. For more options, visit https://groups.google.com/d/optout.
