port 25 only accepts connections from localhost

Allen Seelye

21 Sep 2003 21 Sep '03

02:53

I'm running suse 8.2, kernel 2.4.20 with postfix 2.0.6. I'm sure that this question has already been asked but I have been unable to find it in the archives and I've been in google hell with it for several hours now without turning up a real answer other than this seems to be specific to the latest suse releases. I just want to get port 25 to accept outside connections. I have "inet_interfaces" set to "all" in main.cf, which is about the only fix I've found any mention of but it isn't fixing the problem. netstat shows the smtp service listening on 172.0.0.1:25. I've also set "POSTFIX_NULLCLIENT" to "no" in sysconfig\postfix. I know that port 25 is open on the firewall because I am able to connect to my isp's mail server on port 25 with no problems. From the mail server I am able to telnet to localhost 25 and send mail just fine. Any advice is appreciated.

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Patrick Shanahan

21 Sep 21 Sep

03:05

New subject: [SLE] port 25 only accepts connections from localhost

* Allen Seelye [09-20-03 21:54]:

...

I just want to get port 25 to accept outside connections.

SuSEfirewall2, SMTP_LISTEN_REMOTE (set with Yast2). -- Patrick Shanahan Registered Linux User #207535 http://wahoo.no-ip.org @ http://counter.li.org

Allen Seelye

03:45

New subject: [SLE] port 25 only accepts connections from localhost

Patrick Shanahan wrote:

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* Allen Seelye [09-20-03 21:54]:

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I just want to get port 25 to accept outside connections.

SuSEfirewall2, SMTP_LISTEN_REMOTE (set with Yast2).

Forgot about that one. I set that option to "yes". Still not able to connect. Thank you though. -- Allen Seelye Aseelye@blackfoot.net

Allen Seelye

06:04

New subject: [SLE] port 25 only accepts connections from localhost

Allen Seelye wrote:

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Patrick Shanahan wrote:

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* Allen Seelye [09-20-03 21:54]:

...
I just want to get port 25 to accept outside connections.

SuSEfirewall2, SMTP_LISTEN_REMOTE (set with Yast2).

Forgot about that one. I set that option to "yes". Still not able to connect. Thank you though.

Mohammad Fattahian

06:07

New subject: [SLE] port 25 only accepts connections from localhost

Edit /etc/sysconfig/mail And set SMTPD_LISTEN_REMOTE to yes. Mohammad Fattahian Eedé Business Solution -----Original Message----- From: Allen Seelye [mailto:aseelye@blackfoot.net] Sent: Sunday, September 21, 2003 10:35 AM Cc: suse-linux-e@suse.com Subject: Re: [SLE] port 25 only accepts connections from localhost Allen Seelye wrote:

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Patrick Shanahan wrote:

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* Allen Seelye [09-20-03 21:54]:

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I just want to get port 25 to accept outside connections.

SuSEfirewall2, SMTP_LISTEN_REMOTE (set with Yast2).

Forgot about that one. I set that option to "yes". Still not able to connect. Thank you though.

I just had the bright idea to shut the firewall off and try to send something. The port is still only accessible by the localhost even with the firewall off. It's something in the postfix setup. Any massive revelations guys? -- Allen Seelye Aseelye@blackfoot.net -- Check the headers for your unsubscription address For additional commands send e-mail to suse-linux-e-help@suse.com Also check the archives at http://lists.suse.com Please read the FAQs: suse-linux-e-faq@suse.com

del-SLE

06:52

New subject: [SLE] port 25 only accepts connections from localhost

On Sunday 21 Sep 2003 04:45, Allen Seelye wrote:

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Patrick Shanahan wrote:

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* Allen Seelye [09-20-03 21:54]:

...
I just want to get port 25 to accept outside connections.

SuSEfirewall2, SMTP_LISTEN_REMOTE (set with Yast2).

Forgot about that one. I set that option to "yes". Still not able to connect. Thank you though.

Are you connecting via a cable modem that is doing NAT or has a firewall set up? Does your ISP allow you to have port 25 open? -- del suse-linux-e

Allen Seelye

06:57

New subject: [SLE] port 25 only accepts connections from localhost

del-SLE wrote:

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On Sunday 21 Sep 2003 04:45, Allen Seelye wrote:

...
Patrick Shanahan wrote:

...
* Allen Seelye [09-20-03 21:54]:

...
I just want to get port 25 to accept outside connections.

SuSEfirewall2, SMTP_LISTEN_REMOTE (set with Yast2).

Forgot about that one. I set that option to "yes". Still not able to connect. Thank you though.

Are you connecting via a cable modem that is doing NAT or has a firewall set up? Does your ISP allow you to have port 25 open?

Not connected at all. This is local traffic only. -- Allen Seelye Aseelye@blackfoot.net

Bruce Marshall

14:18

New subject: [SLE] port 25 only accepts connections from localhost

On Saturday 20 September 2003 23:45 pm, Allen Seelye wrote:

...

Patrick Shanahan wrote:

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* Allen Seelye [09-20-03 21:54]:

...
I just want to get port 25 to accept outside connections.

SuSEfirewall2, SMTP_LISTEN_REMOTE (set with Yast2).

Forgot about that one. I set that option to "yes". Still not able to connect. Thank you though.

What do you have for 'mynetworks' in /etc/postfix/main.cf ?? You would need to have the ip addr of your ISP connection I think.

...

-- Allen Seelye Aseelye@blackfoot.net

-- +----------------------------------------------------------------------------+ + Bruce S. Marshall bmarsh@bmarsh.com Bellaire, MI 09/21/03 10:17 + +----------------------------------------------------------------------------+ "A mouse is an elephant built by the Japanese."

Allen Seelye

22:45

New subject: [SLE] port 25 only accepts connections from localhost (SOLVED... sort of)

Bruce Marshall wrote:

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On Saturday 20 September 2003 23:45 pm, Allen Seelye wrote:

...
Patrick Shanahan wrote:

...
* Allen Seelye [09-20-03 21:54]:

...
I just want to get port 25 to accept outside connections.

SuSEfirewall2, SMTP_LISTEN_REMOTE (set with Yast2).

Forgot about that one. I set that option to "yes". Still not able to connect. Thank you though.

What do you have for 'mynetworks' in /etc/postfix/main.cf ?? You would need to have the ip addr of your ISP connection I think.

...
-- Allen Seelye Aseelye@blackfoot.net

I decided to confirm my suspicions about this being exclusively a SuSE problem. I backed up main.cf and master.cf, removed the suse postfix rpm and then downloaded the postfix sources from postfix.org. I built and installed from sources, copied my existing main.cf and master.cf back into /etc/postfix and did a postfix reload. It's working beautifully now. But I still have no idea about exactly what was causing that behaviour. -- Allen Seelye Aseelye@blackfoot.net

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Allen Seelye
Bruce Marshall
del-SLE
Mohammad Fattahian
Patrick Shanahan