The Planet Forums > Mailenable and firewall

The Planet Forums > Security > Firewalls

sonic

Sep 30 2004, 10:19 PM

What port do I need to clear for Mailenable to get out on when mail is sent from the server? For instance, if a mail does not get through it tries again at a later time, but cannot. I think this is because of my firewall (I'm using Visnetic). I already have smtp and pop ports open.

Kyle

Oct 1 2004, 02:26 AM

What's the message it's giving when it tells you the mail could not be delivered? SMTP (25) and POP3 (110) should be all you need open for normal mail operations. Can your server resolve domains?

sonic

Oct 1 2004, 02:34 AM

Hi Kyle,

The message I get is (email addresses and IP's have been replaced with "----"):

QUOTE

MailEnable: Message delivery has been delayed.

Message is waiting at domain.com for delivery to extensis.com.

Reason: Mail Server for extensis.com could not be contacted at this time. MailEnable will keep trying to deliver this message and will notify you of any progress.

Message headers follow:

Received: from ----------- ([--------------]) by domain.com with MailEnable ESMTP; Wed, 29 Sep 2004 23:22:45 -0500
From: -------------
To: -------------
Subject: RE:
Date: Wed, 29 Sep 2004 21:22:04 -0700
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_0015_01C4A66A.5E412B90"
X-Mailer: Microsoft Office Outlook, Build 11.0.6353
Thread-Index: AcSmgWlEAyzlRg7xT1S8qV8DBiV/SQAIXkrw
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441
In-Reply-To: <974CF6A5D58B7E47932E49CF192C6DF7010369F5@postal.extnsis.com>
Message-ID: <A1F447E424C43E6B22DD19B685A1.MAI@domain.com>

I never had these messages until I installed the Firewall software. So, as a test, I have disabled the firewall and, so far over the last 12 hours, have not received these messages. I was receiving the messages everyday this week while the firewall was enabled.

Another one:

QUOTE

MailEnable: Message delivery has been delayed.

Message is waiting at domain.com for delivery to blacknight.co.uk.

Reason: Mail Server for blacknight.co.uk could not be contacted at this time. MailEnable will keep trying to deliver this message and will notify you of any progress.

Message headers follow:

Received: from localhost ([127.0.0.1]) by domain.com with MailEnable ESMTP; Thu, 30 Sep 2004 09:51:53 -0500
Subject: Topic Reply Notification - Security and Licensing.
To: Undisclosed-recipients:;
Reply-to: -----------------
From: -------------------
Return-Path: ---------------------
Message-ID: <546256c0ae4a8e8f51586e798cf06118@netpublishhost.com>
MIME-Version: 1.0
Content-type: text/plain; charset=iso-8859-1
Content-transfer-encoding: 8bit
Date: Thu, 30 Sep 2004 09:51:53 -0500
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: PHP
X-MimeOLE: Produced By phpBB2

That one was an email that was sent out from phpbb on my server to let a user know that his thread had been replied to. I'm not sure what's going on?

Kyle

Oct 1 2004, 02:37 AM

Try opening TCP/UDP 53 and see if that solves the problem.

RobIncMBA

Sep 4 2005, 10:04 AM

QUOTE (sonic)

By the sounds of it, it is quite possible that the domain you are sending to is bblocking your SMTP relay because it doesn't like its inability to rDNS (or some other Anti-SPAM policy like SPF...) the Private IP that MailEnable is Binding to (since you're behind a firewall and I assume NAT'd?)--do some of your emails get out and some not, or do all of them get stopped at the same point?

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