Cannot Send Emails

Murray BCP 8 years ago updated by felipe rce 7 years ago 3
I can receive IMAP emails to test@condellprojex.net, but I cannot deliver emails from that address.

I receive a "Mail Delivery Failed" email instead.

SMTP error from remote mail server after RCPT to.......
550-Verification failed for test@condellprojex.net
550 -No Such User Here
550 Sender verify failed
1.     If I'm using IMAP, should only exim4 service be started and NOT courier as well?

2.     For IMAP/exim4 which ports should be used for incoming and outgoing on my email client (I'm using Opera Mail)?  I currently have 110/25 ports being used.

3.   I currently have TLS switched off in Ajenti Mail.

Please let me know.

WHy isnt there any manual on this for Ajenti???
Awaiting help still please....   :)