503 This mail server requires authentication when attempting to send to a non-local e-mail address

psx
Posts: 2
Joined: Sun Dec 18, 2016 6:05 pm

503 This mail server requires authentication when attempting to send to a non-local e-mail address

Postby psx » Sun Dec 18, 2016 6:09 pm

Hi

I'm testing MailEnable.

When I try to send emails (from gmail) to an account I have created at my mailenable server - I get this error:

The error that the other server returned was:
503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.

I have checked that in SMTP Properties - advanced SMTP tab - it is set to "Do not require authentification" for delivery to local addresses

Aby idea what might be wrong?

MailEnable-Ian
Site Admin
Posts: 8512
Joined: Mon Mar 22, 2004 4:44 am
Location: Melbourne, Victoria, Australia

Re: 503 This mail server requires authentication when attempting to send to a non-local e-mail address

Postby MailEnable-Ian » Wed Jan 18, 2017 5:48 am

Hi,

Does a valid domain exist under the postoffice where the user resides? Does the mailbox have a valid mapped email address?
Regards,

Ian Margarone
MailEnable Support

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