Hello, I am running an Exchange 2010 messaging environment. For some months, I have been experiencing email delivery failures to some email addresses/domains.
I get messages like :
honolulu.directrouter.com rejected you message to the following email addresses:
honolulu.directrouter.com gave the error: no such user here
box607.bluehost.com rejected your message to the following email addresses: firstname.lastname@example.org
em12345I.servername.com rejected your message to the following email address: email@example.com
em12345l.servername gave this error: please turn on SMTP authentication in your mail client or login to the IMAP/POP3 server before sending your message.
server58.web-hosting.com rejected your message to the following email address: firstname.lastname@example.org. server58.web-hosting.com gave this error: No such person at this address.
For all the messages, if you try sending the same message in about 5 minutes, the message goes through.
Has anyone experienced this ?