1 Topic by freeda.suing

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Topic: Connection Timed Out to some domain

==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.8.7
- Linux/BSD distribution name and version: Ubuntu 12.04.3 LTS 64-bit
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? No
- Related log if you're reporting an issue: connect to nestle-com.mail.protection.outlook.com[213.199.154.87]:25: Connection timed out)
====

Is it possible to setup an smtp relay so that if my server can not send the email, my smtp relay host can send it instead if it fails.

Thanks,
freeda

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2 Reply by freeda.suing

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Re: Connection Timed Out to some domain

Also, I am wondering why my email server is communicating via port 25. Shoudn't it be communicating via port 587?

connect to maila13.webcontrolcenter.com[216.119.106.129]:25: Connection timed out
connect to mail.wwwexpress.com.ph[222.127.136.20]:25: Connection timed out
connect to relay.globeidc.com.ph[202.95.238.123]:25: Connection timed out

Thanks,
Freeda

3 Reply by ZhangHuangbin

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Re: Connection Timed Out to some domain

*) Port 587 is used between your mail user/client and your server.
*) Port 25 is used between your server and others' servers.

About 'connection timed out', you should check whether or not it's an issue of destination server. for example, it's offline, or it's not resolvable in DNS, or it refused to talk to your server, etc.

4 Reply by freeda.suing

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Re: Connection Timed Out to some domain

Hi Zhang, Thanks for the reply.

Yes, I know there server is the one blocking me but Im not sure why and I am experiencing several of those. Can i input my ISP smtp in the relay host? would that help? If emails cant pass through using my internal mail server, will they be routed to the relay host. Im not sure if that is how it works.
Thanks,

ZhangHuangbin wrote:

*) Port 587 is used between your mail user/client and your server.
*) Port 25 is used between your server and others' servers.

About 'connection timed out', you should check whether or not it's an issue of destination server. for example, it's offline, or it's not resolvable in DNS, or it refused to talk to your server, etc.

5 Reply by freeda.suing

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Re: Connection Timed Out to some domain

Or is it possible (recommended) to change the server to server port to 587 by default.

Thanks alot!

6 Reply by ZhangHuangbin

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Re: Connection Timed Out to some domain

You can try to use ISP smtp server as relay (with Postfix setting 'relayhost =').

7 Reply by freeda.suing

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Re: Connection Timed Out to some domain

If I do this, all my emails are going to be relayed to my isp smtp? or only those emails that fail?
I don't want to use the ISP relay for 100% of my email. Only those that fail.

Is that possible with postfix?

ZhangHuangbin wrote:

You can try to use ISP smtp server as relay (with Postfix setting 'relayhost =').

8 Reply by ZhangHuangbin

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Re: Connection Timed Out to some domain

freeda.suing wrote:

If I do this, all my emails are going to be relayed to my isp smtp? or only those emails that fail?

With 'relayhost=', ALL mails will be relayed to your ISP.

freeda.suing wrote:

I don't want to use the ISP relay for 100% of my email. Only those that fail.
Is that possible with postfix?

You can try 'smtp_fallback_relay' instead of 'relayhost=':
http://www.postfix.org/postconf.5.html# … back_relay

9 Reply by freeda.suing

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Re: Connection Timed Out to some domain

Unfortunately, our isp can only send as much emails per day.

I am not sure qhy Gmail is timing out now But can send to yahoo.
Sep 14 11:18:17 mail postfix/smtp[22355]: connect to alt1.aspmx.l.google.com[173.194.72.27]:25: Connection timed out
Sep 14 11:18:23 mail postfix/smtp[22314]: connect to aspmx2.googlemail.com[64.233.169.27]:25: Connection timed out
Sep 14 11:18:23 mail postfix/smtp[22312]: connect to aspmx4.googlemail.com[74.125.207.27]:25: Connection timed out
Sep 14 11:18:23 mail postfix/smtp[22313]: connect to aspmx2.googlemail.com[64.233.169.27]:25: Connection timed out
Sep 14 11:18:23 mail postfix/smtp[22315]: connect to aspmx2.googlemail.com[64.233.169.27]:25: Connection timed out




ZhangHuangbin wrote:
freeda.suing wrote:

If I do this, all my emails are going to be relayed to my isp smtp? or only those emails that fail?

With 'relayhost=', ALL mails will be relayed to your ISP.

freeda.suing wrote:

I don't want to use the ISP relay for 100% of my email. Only those that fail.
Is that possible with postfix?

You can try 'smtp_fallback_relay' instead of 'relayhost=':
http://www.postfix.org/postconf.5.html# … back_relay

10 Reply by ZhangHuangbin

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Re: Connection Timed Out to some domain

freeda.suing wrote:

I am not sure qhy Gmail is timing out now But can send to yahoo.
Sep 14 11:18:17 mail postfix/smtp[22355]: connect to alt1.aspmx.l.google.com[173.194.72.27]:25: Connection timed out

Check your network settings, and make sure your network devices (like firewalls, routers) not block access to gmail (especially port 25).

11 Reply by freeda.suing

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Re: Connection Timed Out to some domain

Found out that emails are getting through but with this error

(delivery temporarily suspended: connect to aspmx5.googlemail.com[173.194.204.26]:25: Connection timed out)


ZhangHuangbin wrote:
freeda.suing wrote:

I am not sure qhy Gmail is timing out now But can send to yahoo.
Sep 14 11:18:17 mail postfix/smtp[22355]: connect to alt1.aspmx.l.google.com[173.194.72.27]:25: Connection timed out

Check your network settings, and make sure your network devices (like firewalls, routers) not block access to gmail (especially port 25).

12 Reply by freeda.suing

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Re: Connection Timed Out to some domain

I've been reading some stuff.

My /etc/hostname reads mail
My /etc/mailname reads mail.(companydomain).com

Will this have any problem? Altough, its been like this ever since I initialized the server and had no problems. Just now.

13 Reply by ZhangHuangbin

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Re: Connection Timed Out to some domain

Again, Check your network settings, and make sure your network devices (like firewalls, routers) not block access to gmail (especially port 25).