It's acting like you're sending "from" one of the domains managed by mail.com (they have hundreds) and you're not presenting credentials that it recognizes... Do you have a mail.com account that is active and you're trying to use that address as your from? Have you logged directly into mail.com to make sure there's no issue with your account and credentials? Have you tried sending from your real gmail.com address; to make sure it's related to the particular alias.
On Sat, Jan 4, 2014 at 12:24 PM, Nelson Ingersoll < [email protected]> 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/groups/opt_out. > -- 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/groups/opt_out.
