From: Kim Jensen <kimj@dawn.dk>
To: netfilter@lists.netfilter.org
Subject: Re: What ports need to be open to allow for mail?
Date: Thu, 10 Apr 2003 13:20:54 +0200 [thread overview]
Message-ID: <200304101320.54473.kimj@dawn.dk> (raw)
In-Reply-To: <5.1.0.14.2.20030410122405.02794440@of23sm3.kadnet.dom>
>I'm trying to set up my mail server; however I want to
>make sure that I have the correct port(s) open. I
>already have TCP port 25 open; however do I also have
>to have UDP port 25 open as well? Any help would be
>appreciated.
>
Extract from /etc/services:
SMTP:
smtp 25/tcp mail
smtp 25/udp mail
smtps 465/tcp # SMTP over SSL (TLS)
POP:
pop2 109/tcp pop-2 postoffice # POP version 2
pop2 109/udp pop-2
pop3 110/tcp pop-3 # POP version 3
pop3 110/udp pop-3
pop3s 995/tcp # POP-3 over SSL
pop3s 995/udp # POP-3 over SSL
IMAP:
imap 143/tcp imap2 # Interim Mail Access Proto v2
imap 143/udp imap2
imap3 220/tcp # Interactive Mail Access
imap3 220/udp # Protocol v3
imaps 993/tcp # IMAP over SSL
imaps 993/udp # IMAP over SSL
Now, make you picking, standard answer is:
25 for SMTP
110 for POP3
143 for IMAP
/Kim
next prev parent reply other threads:[~2003-04-10 11:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-10 9:39 What ports need to be open to allow for mail? James Marcinek
2003-04-10 10:18 ` Raymond Leach
2003-04-10 10:24 ` Rasmus Reinholdt Nielsen
2003-04-10 11:20 ` Kim Jensen [this message]
2003-04-10 10:42 ` Johannes Walch
2003-04-10 10:43 ` Jesper Lund
2003-04-10 19:43 ` Rob Sterenborg
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=200304101320.54473.kimj@dawn.dk \
--to=kimj@dawn.dk \
--cc=netfilter@lists.netfilter.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox