MAIL SERVER

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 ?

Add ptr record to your dns

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

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 ?

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.

;; 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.
;; WHEN: Fri Jul 21 22:09:23 +03 2017
;; MSG SIZE  rcvd: 113



this is true for me ?

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

[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)

I can not send mail yet :S

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.

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

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