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Author Topic: smtp blocked  (Read 9714 times)

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Offline MRatWork

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Re: smtp blocked
« Reply #15 on: 2015-05-09, 07:46:05 »
Send and received mail always use spamhaus (and others) for detecting IP blacklisted. If your IP is blacklisted, your send mail always failed.
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Offline ItzJustinN

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Re: smtp blocked
« Reply #16 on: 2015-05-09, 07:49:44 »
its only failed if i dont use smtp relay of my isp.
i was sending mail without problem before my drive failed and i reinstall kloxo.
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Offline MRatWork

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Re: smtp blocked
« Reply #17 on: 2015-05-09, 08:07:28 »
Check your IP to http://mxtoolbox.com/
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Offline ItzJustinN

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Re: smtp blocked
« Reply #18 on: 2015-05-09, 22:18:59 »
hi again,

i tried those tests before posting here.
mxtoolbox found no problem with my servers


btw, my error is the same as the other guy having mail problems, but mine is 7.0
May  9 15:04:41 services send: delivery 15: deferral: Sorry,_I_wasn't_able_to_establish_an_SMTP_connection._(#4.4.1)/

                                                                                                                                                             
« Last Edit: 2015-05-09, 22:21:17 by ItzJustinN »
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Offline MRatWork

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Re: smtp blocked
« Reply #19 on: 2015-05-09, 22:58:06 »
I found sunderfall.com have 'bad' record in mxtoolbox. Blacklist by Spamhaus ZEN and SORBS DUHL. Also no SPF record, DKIM/DomainKeys and DMARC.
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Offline ItzJustinN

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Re: smtp blocked
« Reply #20 on: 2015-05-09, 22:59:35 »
again i will tell you its listed because i have to send mail to ISP mail server
and those records are no reason i cannot open an SMTP connection in MY OWN server.
« Last Edit: 2015-05-09, 23:01:33 by ItzJustinN »
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Offline MRatWork

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Re: smtp blocked
« Reply #21 on: 2015-05-09, 22:59:48 »
Domain  sunderfall.com using cloudflare and look like dns records uncompletely.
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Offline MRatWork

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Re: smtp blocked
« Reply #22 on: 2015-05-09, 23:00:52 »
Quote from: ItzJustinN on 2015-05-09, 22:59:35
again i will tell you its listed because i have to send mail to ISP mail server
But, no SPF record, DKIM/DomainKeys and DMARC.
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Offline ItzJustinN

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Re: smtp blocked
« Reply #23 on: 2015-05-09, 23:04:15 »
i dont know how to explain to you that NOTHING has changed for DNS or the Firewall.
email server was working fine before my hard drive crashed.
and i never set those records you speak of.
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Offline MRatWork

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Re: smtp blocked
« Reply #24 on: 2015-05-09, 23:28:43 »
I am just talking about facts. Testing with mxtoolbox.com, your domain isn't pass.

Other possibility is your dns setting in cloudflare not good (missing some records like SPF).
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Offline MRatWork

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Re: smtp blocked
« Reply #25 on: 2015-05-09, 23:46:14 »
This is different between our domain:
Code: [Select]
[root@op1 /]# telnet njbck.potissima.com 25
Trying 108.61.191.40...
Connected to njbck.potissima.com.
Escape character is '^]'.
220 njbck.potissima.com - Welcome to Qmail ESMTP
^C^]
telnet> quit
Connection closed.
[root@op1 /]# telnet sunderfall.com 25
Trying 104.18.51.221...
telnet: connect to address 104.18.51.221: Connection timed out
Trying 104.18.50.221...
telnet: connect to address 104.18.50.221: Connection timed out
Trying 2400:cb00:2048:1::6812:32dd...
telnet: connect to address 2400:cb00:2048:1::6812:32dd: Network is unreachable
Trying 2400:cb00:2048:1::6812:33dd...
telnet: connect to address 2400:cb00:2048:1::6812:33dd: Network is unreachable
[root@op1 /]#
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Offline ItzJustinN

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Re: smtp blocked
« Reply #26 on: 2015-05-10, 09:18:35 »
you cant connect to my server at that address, because "sunderfall.com" 
go through cloudflare, and cloudflare blocking many ports.

only possible direct connect to : "services.sunderfall.com"
this address  not routed through cloudflare network.



anyways i created a new vps on the same network
installed kloxo 7 and setup routeable domain
but i had same problem with mail server could not connect.
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Offline MRatWork

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Re: smtp blocked
« Reply #27 on: 2015-05-10, 11:55:34 »
Try add 'services' in 'A record' for sunderfall.com
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