make sure your resolv.conf file is correct under /etc/ . if so then copy this file to /var/spool/postfix/etc/resolv.conf then run postfix flush or postqueue -f to force postfix to reprocess the queue
NOQUEUE: reject: RCPT from mta.sample.net: 450 4.1.2 <email@example.com>: Recipient address rejected: Domain not found; from=<bounce solution: check your dns record for errors, in most cases you are missing a A record. Or the dns servers are not responding.
The first thing to do is to open a connection from your computer to your mail server. telnet mail.domain.ext 110 You should receive a reply like: Trying ???.???.???.???… Connected to mail.domain.ext. Escape character is ‘^]’. +OK ready Then log in: USER userName This should give you: +OK Password required for userName. Now give
You can change the ports for *all email accounts* in Eudora for the POP, IMAP, SMTP, ACAP, or Password Change Port by using the esoteric settings. First exit Eudora. Look in the Eudora directory for the folder “Extrastuff”. In this folder there is a file named “esoteric.epi”. Drag this file into the main Eudora directory.