KB ARTICLE: Email Errors

You have reached this webpage due to a email error message, do read the message received as this will have a explanation within - This might contain a error code reference or a human readible notice, let the recipient know what the error notes contain so they may contact the mail administrator. (A telephone call or SMS message if email is not working for you)

Email recipient address incorrectly spelt?

Email recipient address does not exist?

Email too big? Our size limit is 50MB per email and the receiver may also have a limitation smaller than this. File sharing services should be used over this limit. (Dropbox, ownCloud, Box etc)

SPF error message? See: https://kb.accessmy.email/email-policy#spf

Invalid Hostname? See: https://kb.accessmy.email/email-policy#valid_hostname

Blacklisted email address, read below "Submit your email issue"

Common error codes

501 = Invalid domain name within your “To” recipient address – Usually, a spelling mistake or the @their-domain-name.com does not exist.

521 = The message sent is too large for the receiving party – Sending large attachments? Use a file-sharing service to send large files to the recipient.

522 = The recipient has exceeded their mailbox storage limit – Someone should call them and let them know as the recipient may be unaware of the issue.

550 = Invalid recipient – Usually a spelling mistake or the email address does not exist

Mail administrators and technical persons

See KB article “Email Policy” for further investigation as a starting point to resolve the issue discovered.

Submit your email issue

Please remember, while computers run the internet it is humans that make adjustments to email software, change email providers and misconfigure DNS settings and more frequently are participants in automated spammer networks via compromised email accounts.

If your email cannot be delivered, do call the recipient first to let them know you are attempting to do so.

If you have a email error message saying your email has been blacklisted, it may have been part of a previous or recent email campaign sending content from compromised email accounts so users have reported the email address as showing unsolicited messages (junk) or malicious content and/or attachments. You may request to be de-listed from this blacklist.

If you think you have all the information and believe this requires further investigation, Submit a issue request to the postmaster