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Squirrelmail doesn't read from the Maildir directly. It reads from and IMAP server. It appears you may not be connecting to the IMAP server. I use Dovecot as an IMAP server. You can connect to the IMAP server using Telnet and test out connectivity. Once you have IMAP working, then you can move on to getting Squirrelmail working. With IMAP you can also ...


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The problem is not squirrelmail, but your IMAP-Server. Dovecot only connects to the local IMAP-server (in your config the options $domain, $imapServerAddress and $imapPort define this connection), which offers to the client the mails he sees. For dovecot, see the docs on MailLocation/Maildir, for cyrus I could't find a doc for that specific topic, just see ...


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Your provided information is very lean, not enough to accurately debug the problem, but I can make a few educated guesses and give you some places to look. Are you sure that the failed attemp was connecting to smtp.sendgrid.com:587? It's acting like your exim connected to port 25, and didn't use a user/pass to try to send, which sendgrid rejected. It very ...


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The auth_http does two main things: It authenticates users (including various options to effectively delay users on failed authentication). And it determines which backend to use (and which username and password to use in backend authentication, if at all). While in some cases authentication can be handled directly by a backend, it's not something always ...


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Try iptables -A INPUT -p tcp -m multiport --dports 25,110,143,993,995 -j REJECT This should block all incoming attempts to TCP ports 25 (SMTP), IMAP (plaintext and secure; 143 and 993) and POP (ditto, 110 and 995). If postfix listens on an MUA port (possibly 587) you'll need to add that to the list as well. That said, John Auld's suggestion above of ...


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If the two mail servers are running without problems with the IMAP protocol I would use imapsync to do the job. Both Courier and Dovecot are supported by imapsync. It's really straightforward to use and support many features, like regexp mappings for different folder synchronisation. The software is FOSS and can be found here: http://imapsync.lamiral.info ...



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