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WebPanel => CentOS 7 Problems => Topic started by: Menna on July 17, 2017, 01:18:06 PM

Title: MAIL SERVER
Post by: Menna on July 17, 2017, 01:18:06 PM

Hello dear,
when i send out mail (gmail , yahoo etc.) mail is coming in my server but when i need to send it my domain cant go to out side? My Internet provider rdns and opened 25 ports. all time i'll get rDNS/PTR = FAILED, check with your hosting provider! this message. so what i need to do. change rdns checker ip ?

Title: Re: MAIL SERVER
Post by: Glenn on July 17, 2017, 06:19:41 PM

Add ptr record to your dns

Title: Re: MAIL SERVER
Post by: Menna on July 17, 2017, 07:45:41 PM

how can i get my PTR record or have you got the same one ?

Title: Re: MAIL SERVER
Post by: Menna on July 17, 2017, 08:21:11 PM

Simple rDNS Checker (PTR records)
Your rDNS for IP 192.168.0.2 is set as following:


 resolves to: a.root-servers.net.
b.root-servers.net.
c.root-servers.net.
d.root-servers.net.
e.root-servers.net.
f.root-servers.net.
g.root-servers.net.
h.root-servers.net.
i.root-servers.net.
j.root-servers.net.
k.root-servers.net.
l.root-servers.net.
m.root-servers.net.



this is true ?

Title: Re: MAIL SERVER
Post by: Administrator on July 18, 2017, 06:51:33 PM

from linux you can check your PTR/RDNS records by using this comand

Code: [Select]

dig -x IPADDRESS +short it should be as your hostname.

Title: Re: MAIL SERVER
Post by: Menna on July 21, 2017, 07:10:39 PM

;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 17665
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;7.200.55.94.in-addr.arpa.      IN      PTR

;; AUTHORITY SECTION:
94.in-addr.arpa.        1785    IN      SOA     pri.authdns.ripe.net. dns.ripe.net. 1500654672 3600 600 864000 3600

;; Query time: 83 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Fri Jul 21 22:09:23 +03 2017
;; MSG SIZE  rcvd: 113



this is true for me ?

Title: Re: MAIL SERVER
Post by: Menna on July 21, 2017, 07:15:39 PM

all email is waiting on Mail Queue :S i think someting is wrong

Title: Re: MAIL SERVER
Post by: Menna on July 21, 2017, 11:25:32 PM

[root@home ~]# tail -f /var/log/maillog
Jul 22 02:23:35 home postfix/smtp[30907]: F1E2A1A04A6: to=<check-auth@verifier.port25.com>, relay=none, d                                                    elay=31, delays=0.21/0.13/30/0, dsn=4.4.1, status=deferred (connect to verifier.port25.com[38.95.177.125]                                                    :25: Connection timed out)

Title: Re: MAIL SERVER
Post by: Menna on July 29, 2017, 08:09:59 PM

I can not send mail yet :S

Title: Re: MAIL SERVER
Post by: Administrator on July 30, 2017, 07:09:53 AM

the best would be that you check this with your server provider, it could be that your server provider has blocked smtp ports or your server firewall.
In some cases providers don't allow usage of the port smtp port 25 so you need to check that with them.

Title: Re: MAIL SERVER
Post by: Jae on July 31, 2017, 04:46:30 AM

Quote from: Menna on July 21, 2017, 11:25:32 PM

verifier.port25.com[38.95.177.125]                                                    :25: Connection timed out)

Your isp block outgoing port 25, ask them to open it