SOLVED Email Connection Timing Out

Joef · Jan 15, 2017

Hi,

I just installed VPS CENTOS 6.8 x86_64 kvm – server WHM 60.0 (build 34) and everything is working great except sending emails. All outgoing emails go into queue and can't be sent.

I've tried sending to gmail, hotmail, and yahoo.

When I try to delivery it through Mail Queue Manager I get this:

Code:

delivering 1cSjWB-0006L0-SA
Connecting to gmail-smtp-in.l.google.com [173.194.198.26]:25 from xx.xx.27.198 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
  H=gmail-smtp-in.l.google.com [173.194.198.26] Connection timed out
Connecting to alt1.gmail-smtp-in.l.google.com [173.194.205.26]:25 from xx.xx.27.198 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
  H=alt1.gmail-smtp-in.l.google.com [173.194.205.26] Connection timed out
Connecting to alt2.gmail-smtp-in.l.google.com [74.125.141.27]:25 from xx.xx.27.198 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
  H=alt2.gmail-smtp-in.l.google.com [74.125.141.27] Connection timed out
Connecting to alt3.gmail-smtp-in.l.google.com [64.233.186.27]:25 from xx.xx.27.198 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
  H=alt3.gmail-smtp-in.l.google.com [64.233.186.27] Connection timed out
Connecting to alt4.gmail-smtp-in.l.google.com [209.85.202.26]:25 from xx.xx.27.198 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
  H=alt4.gmail-smtp-in.l.google.com [209.85.202.26] Connection timed out
LOG: MAIN
  == someusr@gmail.com R=dkim_lookuphost T=dkim_remote_smtp defer (110): Connection timed out

When I run this but it's not my ip. My ip :

Code:

[root@server ~]# cat /etc/resolv.conf
; generated by /sbin/dhclient-script
nameserver 108.61.10.10

Code:

[root@server ~]# exim -bt myemail@hotmail.com
myemail@hotmail.com
  router = lookuphost, transport = remote_smtp
  host mx1.hotmail.com [65.55.33.119]   MX=5
  host mx1.hotmail.com [65.55.37.72]    MX=5
  host mx1.hotmail.com [65.55.92.136]   MX=5
  host mx1.hotmail.com [104.44.194.234] MX=5
  host mx1.hotmail.com [65.54.188.126]  MX=5
  host mx1.hotmail.com [104.44.194.235] MX=5
  host mx1.hotmail.com [65.54.188.72]   MX=5
  host mx1.hotmail.com [65.55.92.168]   MX=5
  host mx1.hotmail.com [65.55.33.135]   MX=5
  host mx1.hotmail.com [104.44.194.231] MX=5
  host mx1.hotmail.com [104.44.194.233] MX=5
  host mx1.hotmail.com [207.46.8.167]   MX=5
  host mx1.hotmail.com [65.55.37.88]    MX=5
  host mx1.hotmail.com [104.44.194.236] MX=5
  host mx1.hotmail.com [65.55.92.184]   MX=5
  host mx1.hotmail.com [104.44.194.232] MX=5
  host mx1.hotmail.com [104.44.194.237] MX=5
  host mx1.hotmail.com [134.170.2.199]  MX=5
  host mx1.hotmail.com [65.55.37.104]   MX=5
  host mx4.hotmail.com [65.55.37.120]   MX=5
  host mx4.hotmail.com [65.54.188.110]  MX=5
  host mx4.hotmail.com [65.55.92.152]   MX=5
  host mx4.hotmail.com [207.46.8.199]   MX=5
  host mx4.hotmail.com [65.54.188.94]   MX=5

Code:

[root@server ~]# exigrep myemail@hotmail.com /var/log/exim_mainlog
2017-01-15 04:03:04 1cSbsi-0005mZ-Uj H=mx3.hotmail.com [65.55.92.152] Connection timed out
2017-01-15 04:04:07 1cSbsi-0005mZ-Uj H=mx3.hotmail.com [104.44.194.237] Connection timed out
2017-01-15 04:05:10 1cSbsi-0005mZ-Uj H=mx3.hotmail.com [104.44.194.232] Connection timed out
2017-01-15 04:06:13 1cSbsi-0005mZ-Uj H=mx3.hotmail.com [207.46.8.199] Connection timed out
2017-01-15 04:07:16 1cSbsi-0005mZ-Uj H=mx3.hotmail.com [65.54.188.94] Connection timed out
2017-01-15 04:07:16 1cSbsi-0005mZ-Uj == myemail@hotmail.com R=lookuphost T=remote_smtp defer (110): Connection timed out
2017-01-15 04:13:34 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.55.33.135] Connection timed out
2017-01-15 04:14:37 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [104.44.194.235] Connection timed out
2017-01-15 04:15:40 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.55.92.184] Connection timed out
2017-01-15 04:16:43 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.55.37.104] Connection timed out
2017-01-15 04:17:46 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [207.46.8.167] Connection timed out
2017-01-15 04:17:46 1cSbsi-0005mZ-Uj == myemail@hotmail.com R=lookuphost T=remote_smtp defer (110): Connection timed out
2017-01-15 05:13:34 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.54.188.126] Connection timed out
2017-01-15 05:14:37 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.55.33.119] Connection timed out
2017-01-15 05:15:40 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [134.170.2.199] Connection timed out
2017-01-15 05:16:43 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.55.37.72] Connection timed out
2017-01-15 05:17:46 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [104.44.194.233] Connection timed out
2017-01-15 05:17:46 1cSbsi-0005mZ-Uj == myemail@hotmail.com R=lookuphost T=remote_smtp defer (110): Connection timed out
2017-01-15 06:13:34 1cSbsi-0005mZ-Uj H=mx4.hotmail.com [104.44.194.232] Connection timed out
2017-01-15 06:14:37 1cSbsi-0005mZ-Uj H=mx4.hotmail.com [65.55.37.72] Connection timed out
2017-01-15 06:15:40 1cSbsi-0005mZ-Uj H=mx4.hotmail.com [104.44.194.235] Connection timed out
2017-01-15 06:16:43 1cSbsi-0005mZ-Uj H=mx4.hotmail.com [65.54.188.94] Connection timed out
2017-01-15 06:17:46 1cSbsi-0005mZ-Uj H=mx4.hotmail.com [65.55.92.184] Connection timed out
2017-01-15 06:17:46 1cSbsi-0005mZ-Uj == myemail@hotmail.com R=lookuphost T=remote_smtp defer (110): Connection timed out
2017-01-15 06:45:59 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [104.44.194.235] Connection timed out
2017-01-15 06:47:02 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [104.44.194.231] Connection timed out
2017-01-15 06:48:05 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [104.44.194.237] Connection timed out
2017-01-15 06:49:08 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [104.44.194.233] Connection timed out
2017-01-15 06:50:11 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.54.188.72] Connection timed out
2017-01-15 06:50:11 1cSbsi-0005mZ-Uj == myemail@hotmail.com R=lookuphost T=remote_smtp defer (110): Connection timed out
2017-01-15 07:16:28 1cSbsi-0005mZ-Uj removed by root
2017-01-15 07:16:28 1cSbsi-0005mZ-Uj Completed

Code:

[root@server ~]# cat /var/log/exim_mainlog | grep 1cSbsi-0005mZ-Uj
2017-01-15 04:03:04 1cSbsi-0005mZ-Uj H=mx3.hotmail.com [65.55.92.152] Connection timed out
2017-01-15 04:04:07 1cSbsi-0005mZ-Uj H=mx3.hotmail.com [104.44.194.237] Connection timed out
2017-01-15 04:05:10 1cSbsi-0005mZ-Uj H=mx3.hotmail.com [104.44.194.232] Connection timed out
2017-01-15 04:06:13 1cSbsi-0005mZ-Uj H=mx3.hotmail.com [207.46.8.199] Connection timed out
2017-01-15 04:07:16 1cSbsi-0005mZ-Uj H=mx3.hotmail.com [65.54.188.94] Connection timed out
2017-01-15 04:07:16 1cSbsi-0005mZ-Uj == myemail@hotmail.com R=lookuphost T=remote_smtp defer (110): Connection timed out
2017-01-15 04:13:34 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.55.33.135] Connection timed out
2017-01-15 04:14:37 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [104.44.194.235] Connection timed out
2017-01-15 04:15:40 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.55.92.184] Connection timed out
2017-01-15 04:16:43 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.55.37.104] Connection timed out
2017-01-15 04:17:46 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [207.46.8.167] Connection timed out
2017-01-15 04:17:46 1cSbsi-0005mZ-Uj == myemail@hotmail.com R=lookuphost T=remote_smtp defer (110): Connection timed out
2017-01-15 05:13:34 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.54.188.126] Connection timed out
2017-01-15 05:14:37 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.55.33.119] Connection timed out
2017-01-15 05:15:40 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [134.170.2.199] Connection timed out
2017-01-15 05:16:43 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.55.37.72] Connection timed out
2017-01-15 05:17:46 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [104.44.194.233] Connection timed out
2017-01-15 05:17:46 1cSbsi-0005mZ-Uj == myemail@hotmail.com R=lookuphost T=remote_smtp defer (110): Connection timed out
2017-01-15 06:13:34 1cSbsi-0005mZ-Uj H=mx4.hotmail.com [104.44.194.232] Connection timed out
2017-01-15 06:14:37 1cSbsi-0005mZ-Uj H=mx4.hotmail.com [65.55.37.72] Connection timed out
2017-01-15 06:15:40 1cSbsi-0005mZ-Uj H=mx4.hotmail.com [104.44.194.235] Connection timed out
2017-01-15 06:16:43 1cSbsi-0005mZ-Uj H=mx4.hotmail.com [65.54.188.94] Connection timed out
2017-01-15 06:17:46 1cSbsi-0005mZ-Uj H=mx4.hotmail.com [65.55.92.184] Connection timed out
2017-01-15 06:17:46 1cSbsi-0005mZ-Uj == myemail@hotmail.com R=lookuphost T=remote_smtp defer (110): Connection timed out
2017-01-15 06:45:59 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [104.44.194.235] Connection timed out
2017-01-15 06:47:02 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [104.44.194.231] Connection timed out
2017-01-15 06:48:05 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [104.44.194.237] Connection timed out
2017-01-15 06:49:08 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [104.44.194.233] Connection timed out
2017-01-15 06:50:11 1cSbsi-0005mZ-Uj H=mx1.hotmail.com [65.54.188.72] Connection timed out
2017-01-15 06:50:11 1cSbsi-0005mZ-Uj == myemail@hotmail.com R=lookuphost T=remote_smtp defer (110): Connection timed out
2017-01-15 07:16:28 cwd=/usr/local/cpanel/whostmgr/docroot 4 args: /usr/sbin/exim -v -Mrm 1cSbsi-0005mZ-Uj
2017-01-15 07:16:28 1cSbsi-0005mZ-Uj removed by root
2017-01-15 07:16:28 1cSbsi-0005mZ-Uj Completed

When I test for open ports I get this:

Code:

21 ftp Open 35
  22 ssh Open 34
  23 telnet Filtered 0
  25 smtp Open 34
  53 dns Open 33
  80 http Open 35
  110 pop3 Open 34
  111 portmapper, rpcbind Filtered 0
  135 Microsoft RPC services Filtered 0
  139 netbios Filtered 0
  143 imap Open 33
  389 ldap Filtered 0
  443 https Open 33
  445 SMB directly over IP Filtered 0
  587 msa-outlook Open 35
  1025 IIS, NFS, or listener RFS remote_file_sharing Filtered 0
  1352 lotus notes Filtered 0
  1433 sql server Filtered 0
  1723 Point-to-point tunnelling protocol Filtered 0
  3306 my sql Open 33
  3389 remote desktop Filtered 0
  5060 Session Initiation Protocol (SIP) Filtered 0
  5900 Virtual Network Computer display 0 Filtered 0
  6001 X Window server Filtered 0
  8080 webcache Refused (RST) 0

Thank you

SysSachin · Jan 15, 2017

Hello,

Please try to use Google's nameserver. You have to add below nameservers in the /etc/resolv.conf file

nameserver 8.8.8.8
nameserver 8.8.4.4

Joef · Jan 16, 2017

I added the Google nameservers, strange because I added them when I first installed the program.

Code:

[root@server etc]# cat /etc/resolv.conf
; generated by /sbin/dhclient-script
nameserver 8.8.8.8
nameserver 8.8.4.4

But I still get timed out:

Code:

LOG: MAIN
  cwd=/usr/local/cpanel/whostmgr/docroot 4 args: /usr/sbin/exim -v -M 1cT3NK-0005rv-AW
delivering 1cT3NK-0005rv-AW
Connecting to mx2.hotmail.com [104.44.194.231]:25 from xx.xx.27.198 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
  H=mx2.hotmail.com [104.44.194.231] Connection timed out
Connecting to mx2.hotmail.com [104.44.194.232]:25 from xx.xx.27.198 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
  H=mx2.hotmail.com [104.44.194.232] Connection timed out
Connecting to mx2.hotmail.com [65.55.37.88]:25 from xx.xx.27.198 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
  H=mx2.hotmail.com [65.55.37.88] Connection timed out
Connecting to mx2.hotmail.com [104.44.194.234]:25 from xx.xx.27.198 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
  H=mx2.hotmail.com [104.44.194.234] Connection timed out
Connecting to mx2.hotmail.com [65.55.92.136]:25 from xx.xx.27.198 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
  H=mx2.hotmail.com [65.55.92.136] Connection timed out
LOG: MAIN
  == myemail@hotmail.com R=dkim_lookuphost T=dkim_remote_smtp defer (110): Connection timed out

I tried sending them out from Magento (shopping cart) and through the Webmail interface but still they go into queue. What else can I check?

Thanks

SysSachin · Jan 16, 2017

Hello,

This does look to be a firewall or network issue as something is denying outbound connections on port 25 from your server:

Also, Please provide me following command output.
Code:
 telnet gmail-smtp-in.l.google.com 25

Joef · Jan 16, 2017

Yeah, that's what I thought but I haven't installed any firewalls thou.

Here is the telnet results:
Code:
 
[root@server ~]# telnet gmail-smtp-in.l.google.com 25
Trying 173.194.196.26...
telnet: connect to address 173.194.196.26: Connection timed out
Trying 2607:f8b0:4001:c1a::1b...
telnet: connect to address 2607:f8b0:4001:c1a::1b: Network is unreachable
Something does seems to be blocking it.

cPanelMichael · Jan 16, 2017

Hello,

I recommend reaching out to your data center or hosting provider to verify if there's anything filtering port 25 traffic in their network or firewall rules. Providers will often block port 25 as a SPAM prevention technique.

Thank you.

Joef · Jan 16, 2017

I just done that. Thanks.

Weird that the port tester shows it's open.

cPanelMichael · Jan 16, 2017

Joef said: ↑

Weird that the port tester shows it's open.
Click to expand...

It's possible the testing application you are using might be testing for incoming traffic over port 25. The issue you are facing relates to outgoing traffic over port 25.

Thanks!

Joef · Jan 16, 2017

It's working!

Code:

LOG: MAIN
  cwd=/usr/local/cpanel/whostmgr/docroot 4 args: /usr/sbin/exim -v -M 1cTDju-000272-Mk
delivering 1cTDju-000272-Mk
Connecting to mx2.hotmail.com [104.44.194.236]:25 from xx.xx.xx.198 ... connected
  SMTP<< 220 SNT004-MC10F2.hotmail.com Sending unsolicited commercial or bulk e-mail to Microsoft's computer network is prohibited. Other restrictions are found at http://privacy.microsoft.com/en-us/anti-spam.mspx. Mon, 16 Jan 2017 12:22:26 -0800
  SMTP>> EHLO example.com
  SMTP<< 250-SNT004-MC10F2.hotmail.com (3.21.0.266) Hello [xx.xx.xx.198]
         250-SIZE 36909875
         250-PIPELINING
         250-8bitmime
         250-BINARYMIME
         250-CHUNKING
         250-STARTTLS
         250-AUTH LOGIN
         250-AUTH=LOGIN
         250 OK
  SMTP>> STARTTLS
  SMTP<< 220 SMTP server ready
  SMTP>> EHLO example.com
  SMTP<< 250-SNT004-MC10F2.hotmail.com (3.21.0.266) Hello [xx.xx.xx.198]
         250-SIZE 36909875
         250-PIPELINING
         250-8bitmime
         250-BINARYMIME
         250-CHUNKING
         250-AUTH LOGIN
         250-AUTH=LOGIN
         250 OK
  SMTP>> MAIL FROM:<orders@example.com> SIZE=31853
  SMTP>> RCPT TO:<myemail@hotmail.com>
  SMTP>> DATA
  SMTP<< 250 orders@example.com....Sender OK
  SMTP<< 250 myemail@hotmail.com
  SMTP<< 354 Start mail input; end with <CRLF>.<CRLF>
  SMTP>> writing message and terminating "."
  SMTP<< 250  <E1cTDju-000272-Mk@server.hosting.com> Queued mail for delivery
  SMTP>> EHLO example.com
  SMTP>> QUIT
LOG: MAIN
  => myemail@hotmail.com R=dkim_lookuphost T=dkim_remote_smtp H=mx2.hotmail.com [104.44.194.236] X=TLSv1.2:ECDHE-RSA-AES256-SHA384:256 CV=yes C="250  <E1cTDju-000272-Mk@server.domain.com> Queued mail for delivery"
LOG: MAIN
  Completed

Thanks

cPanelMichael · Jan 16, 2017

Hello,

I'm happy to see the issue is now resolved. Thank you for updating us with the outcome.

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SOLVED Email Connection Timing Out

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CSF Blocking Users Connection from Email

can't send email (connection time out)

Number of connections to email account?

Outbound email using authentication: identify_local_connection

Remote host closed connection in response email subject

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SOLVED Email Connection Timing Out

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CSF Blocking Users Connection from Email

can't send email (connection time out)

Number of connections to email account?

Outbound email using authentication: identify_local_connection

Remote host closed connection in response email subject

Share This Page

cPanelMichael Technical Support Community Manager
Staff Member

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