Dear Les Mikesell I executed the steps you have advised. 1. MX Record Check [root at ip-173-201-189-43 necs14]# [root at ip-173-201-189-43 necs14]# dig -t MX netcloudjobs.com ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.2 <<>> -t MX netcloudjobs.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28659 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;netcloudjobs.com. IN MX ;; ANSWER SECTION: netcloudjobs.com. 86400 IN MX 0 mail.netcloudjobs.com. ;; AUTHORITY SECTION: netcloudjobs.com. 86400 IN NS ns2.netcloudjobs.com. netcloudjobs.com. 86400 IN NS ns1.netcloudjobs.com. ;; ADDITIONAL SECTION: mail.netcloudjobs.com. 86400 IN A 173.201.189.43 ns1.netcloudjobs.com. 86400 IN A 173.201.189.43 ns2.netcloudjobs.com. 86400 IN A 173.201.189.43 ;; Query time: 0 msec ;; SERVER: 10.0.0.1#53(10.0.0.1) ;; WHEN: Wed Mar 13 15:41:00 2013 ;; MSG SIZE rcvd: 139 [root at ip-173-201-189-43 necs14]# clear [root at ip-173-201-189-43 necs14]# 2. A record check [root at ip-173-201-189-43 necs14]# dig mail.netcloudjobs.com ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.10.rc1.el6_3.2 <<>> mail.netcloudjobs.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5672 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;mail.netcloudjobs.com. IN A ;; ANSWER SECTION: mail.netcloudjobs.com. 86400 IN A 173.201.189.43 ;; AUTHORITY SECTION: netcloudjobs.com. 86400 IN NS ns1.netcloudjobs.com. netcloudjobs.com. 86400 IN NS ns2.netcloudjobs.com. ;; ADDITIONAL SECTION: ns1.netcloudjobs.com. 86400 IN A 173.201.189.43 ns2.netcloudjobs.com. 86400 IN A 173.201.189.43 ;; Query time: 0 msec ;; SERVER: 10.0.0.1#53(10.0.0.1) ;; WHEN: Wed Mar 13 15:42:19 2013 ;; MSG SIZE rcvd: 123 [root at ip-173-201-189-43 necs14]# I see in my firewall telenet/25 is blocked. However smtp/25 is allowed. Not sure how do I debug..., Any idea... -Austin On Wed, Mar 13, 2013 at 9:52 PM, Les Mikesell <lesmikesell at gmail.com> wrote: > On Wed, Mar 13, 2013 at 10:03 AM, Austin Einter <austin.einter at gmail.com> > wrote: > > Dear All > > Recently I just setup postfix, dovecot, roundcube etc in a dedicated > server. > > > > >From roundcuble, I am able to send mail to my gmail account. > > > > But from my gmail account, when sent mail to my mail id, that I setup > > recently, I do not see that email in roundcuble inbox. Neither that mail > > bounced back in gmail. Not sure, how do I debug this. > > > > Kindly let me know how should I proceed to fix this issue. > > First look in your posftix log to see if there has been an attempt to > deliver it. If it hasn't gotten that far, make sure that your DNS MX > record is visible to the rest of the world and also the A record for > the name in the MX. Then check that there are no firewalls blocking > port 25 either from the internet > service provider or your router, or your host. > > These are easiest if you have some outside account where you can: > dig -t MX your_domain.com > then > dig name_of_MX_host > then > telnet IP_address 25 > and you should get an SMTP ready prompt from your postfix. > > If your domain name did not resolve in DNS at all, gmail should have > rejected it immediately, but it may resolve to the wrong address or > the connection may be blocked somewhere and it would retry for a > while. > > -- > Les Mikesell > lesmikesell at gmail.com > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >