> -----Original Message----- > From: CentOS [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Alexander > Dalloz > Sent: Sunday, August 26, 2018 3:46 PM > To: centos@xxxxxxxxxx > Subject: Re: Mail has quit working > > Am 26.08.2018 um 20:48 schrieb TE Dukes: > >> You see a basic error message "Could not connect to localhost:143". So > >> test that without using additional software. Foremost consult the > >> maillog, in this case the log content produced by dovecot. And test > >> connectivity on the lowest level. > >> > >> echo QUIT | openssl s_client -connect localhost:143 -starttls imap > > I'm getting what appears to be help file with various options when trying to > > run the above commad > > Can we guess that you don't offer TLS for IMAP connections? > I added this to /etc/postfix/main.cf from https://access.redhat.com/solutions/120383 smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3 smtpd_tls_protocols = !SSLv2, !SSLv3 smtp_tls_mandatory_protocols = !SSLv2, !SSLv3 smtp_tls_protocols = !SSLv2, !SSLv3 > >> That must be successful first. You can too test "lsof -i :143" or "ss > >> -tulpen | grep 143". And tail your maillog. > >> > > Running lsof -i :143, I get: > > > > COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME > > dovecot 1576 root 37u IPv4 32014 0t0 TCP *:imap (LISTEN) > > dovecot 1576 root 38u IPv6 32015 0t0 TCP *:imap (LISTEN) > > > > Running ss -tulpen | grep 143 : > > > > tcp LISTEN 0 100 *:143 *:* > > users:(("dovecot",pid=1576,fd=37)) ino:32014 sk:ffff913e953e2e80 <-> > > tcp LISTEN 0 100 :::143 :::* > > users:(("dovecot",pid=1576,fd=38)) ino:32015 sk:ffff913b2e90a100 v6only:1 > > <-> > > So port 143 is listening. Are we back to the point that your DNS or NSS > is broken so that even I think so. Everything else work, I don't get it. > > telnet localhost 143 > > fails while > > telnet 127.0.0.1 143 > > is successful? > Yes, that is correct localhost fails but 127.0.0.1 responds. Thanks _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos