Topic: [SOLVE] Relay access denied by using ThunderBird 3
I am using webmail of iRedmail to send and receive mail without any problem.
Today I setup Thunderbird 3 to test iRedmail and got the error from Thunderbird 3.
"An error occurred while sending mail. The mail server responded: 5.7.1 <firstname.lastname@example.org>: Relay access denied. Please check the message recipient email@example.com and try again."
I am using SMTP port 25 without any security authentication
login name using firstname.lastname@example.org (I hidden my real domain)
Here is the log in maillog
Feb 26 16:58:47 mail postfix/smtpd: NOQUEUE: reject: RCPT from unknown[192.168.1.61]: 554 5.7.1 <email@example.com>: Relay access denied; from=<firstname.lastname@example.org to=<email@example.com> proto=ESMTP helo=<[192.168.1.61]>
However, I sent the mail to the local server without any problem. That meaning the error occur only on external dommain.
I think that may be the problem about relay smtp but I don't know what setting I making wrong.
Anyone can help?