-----Original Message----- From: CentOS [mailto:centos-bounces@centos.org] On Behalf Of centos--- via CentOS Sent: Monday, August 27, 2018 9:31 AM To: centos@centos.org Subject: Re: [CentOS] Mail has quit working
On 08/27/2018 09:05 AM, TE Dukes wrote:
-----Original Message----- From: CentOS [mailto:centos-bounces@centos.org] On Behalf Of Richard Sent: Monday, August 27, 2018 7:58 AM To: CentOS mailing list Subject: Re: [CentOS] Mail has quit working
Date: Monday, August 27, 2018 07:42:48 -0400 From: TE Dukes tdukes@palmettoshopper.com
From: CentOS [mailto:centos-bounces@centos.org] On Behalf Of Richard Sent: Monday, August 27, 2018 7:29 AM
Since the localhost4 approach worked, commend out the ipv6 localhost entries in your /etc/hosts file, then try:
IP6 is commented out
dig @localhost localhost aThat works
again. If that works try:
telnet localhost 143This also works
once again. If those work, it would seem that your ipv6 is messed up and your system is trying it first and not falling back to ipv4.
Regarding your nameserver list in /etc/resolv.conf. If you have a working 127.0.0.1 nameserver you generally don't include external nameservers in that list. So, if non-ipv6 things seem to work, I'd remove the two non-127 nameservers from that list.
Removed the two nameservers. Still can't access mail. Getting connection to storage server failed on the roundcube login page.
That you can now successfully get to "localhost" is good progress. Seems you want to stay away from ipv6 networking issues unless/until you resolve whatever that issue is.
Roundcube is, potentially, a totally separate issue. I don't use it, so can only suggest minimal debugging ideas.
What is the hostname that you use to get to your roundcube instance? Can you resolve that:
dig <hostname> aIf you get an answer, is the ipnumber correct?
; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7 <<>> mail.palmettodomains.com a ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40652 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 3
;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;mail.palmettodomains.com. IN A
;; ANSWER SECTION: mail.palmettodomains.com. 86400 IN A 192.169.1.110
;; AUTHORITY SECTION: palmettodomains.com. 86400 IN NS
dns1.palmettodomains.com.
;; ADDITIONAL SECTION: dns1.palmettodomains.com. 86400 IN A 192.168.1.110 dns1.palmettodomains.com. 86400 IN AAAA aaaa:bbbb::110
;; Query time: 0 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Mon Aug 27 09:01:48 EDT 2018 ;; MSG SIZE rcvd: 132
Note, if the hostname for your roundcube instance is one of the ipv6 entries in your /etc/hosts file, I'd remove that - and either put in an ipv4 entry or put an entry for it in your dns.
Thanks again! I still think it's a mail issue. I can't get mail using usermin either.
Think I'm going to remove the TLS stuff from postfix main.cf that I
added
yesterday and retry.
If I missed this further up thread my apologies - is SELinux enabled and are there any relevant exceptions being logged?
Pretty sure SELinux is turned off unless it got turned on without my knowledge through an updtate/upgrade.
I removed the TLS lines from main.cf I added last night and remotely did a reboot from here at work.
Mail is again working!! I am skeptical to mark this thread solved as I thought it was solved back in July.
I think, removing my ISP's DNS servers from resolve.conf was the fix, could be removing IPV6 from etc/hosts. Might put it back in just to see.
Again, many, many thanks!!
I really want to thank everyone for their help and patience!!