Port 25 firewall settings for only sending emails from code on windows server 2016
I installed SMTP server on my Windows Server 2016.
This server will be used by my web application to send emails to the users.
For receiving emails I use different mail servers (MX records points to these different servers)
My question is about setting firewall. Will it be enough to open port 25 for only outbound? Do I have to open port 25 for inbound as well?
Thanks.
smtp windows-firewall windows-server-2016
asked Feb 4 at 16:34
GaryGary
111
add a comment |
I installed SMTP server on my Windows Server 2016.
This server will be used by my web application to send emails to the users.
For receiving emails I use different mail servers (MX records points to these different servers)
My question is about setting firewall. Will it be enough to open port 25 for only outbound? Do I have to open port 25 for inbound as well?
Thanks.
smtp windows-firewall windows-server-2016
asked Feb 4 at 16:34
GaryGary
111
add a comment |
I installed SMTP server on my Windows Server 2016.
This server will be used by my web application to send emails to the users.
For receiving emails I use different mail servers (MX records points to these different servers)
My question is about setting firewall. Will it be enough to open port 25 for only outbound? Do I have to open port 25 for inbound as well?
Thanks.
smtp windows-firewall windows-server-2016
asked Feb 4 at 16:34
GaryGary
111
I installed SMTP server on my Windows Server 2016.
This server will be used by my web application to send emails to the users.
For receiving emails I use different mail servers (MX records points to these different servers)
My question is about setting firewall. Will it be enough to open port 25 for only outbound? Do I have to open port 25 for inbound as well?
Thanks.
smtp windows-firewall windows-server-2016
smtp windows-firewall windows-server-2016
asked Feb 4 at 16:34
GaryGary
111
asked Feb 4 at 16:34
GaryGary
111
asked Feb 4 at 16:34
GaryGary
111
asked Feb 4 at 16:34
GaryGary
111
asked Feb 4 at 16:34
GaryGary
111
111
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Welcome to Superuser!
This will work just fine for your purposes. You're correct, you have no need of port 25 inbound since you are not receiving mail.
All of the other verification stuff that mail servers will do to make sure you're not a dirty spammer involves checks against your server's reverse DNS, SPF/DKIM/DMARC, and the message contents - none of which involve connecting back to your mail server.
answered Feb 4 at 16:41
Mikey T.K.Mikey T.K.
2,17931840
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "3"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f1401920%2fport-25-firewall-settings-for-only-sending-emails-from-code-on-windows-server-20%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Welcome to Superuser!
This will work just fine for your purposes. You're correct, you have no need of port 25 inbound since you are not receiving mail.
All of the other verification stuff that mail servers will do to make sure you're not a dirty spammer involves checks against your server's reverse DNS, SPF/DKIM/DMARC, and the message contents - none of which involve connecting back to your mail server.
answered Feb 4 at 16:41
Mikey T.K.Mikey T.K.
2,17931840
add a comment |
Welcome to Superuser!
This will work just fine for your purposes. You're correct, you have no need of port 25 inbound since you are not receiving mail.
All of the other verification stuff that mail servers will do to make sure you're not a dirty spammer involves checks against your server's reverse DNS, SPF/DKIM/DMARC, and the message contents - none of which involve connecting back to your mail server.
answered Feb 4 at 16:41
Mikey T.K.Mikey T.K.
2,17931840
add a comment |
Welcome to Superuser!
This will work just fine for your purposes. You're correct, you have no need of port 25 inbound since you are not receiving mail.
All of the other verification stuff that mail servers will do to make sure you're not a dirty spammer involves checks against your server's reverse DNS, SPF/DKIM/DMARC, and the message contents - none of which involve connecting back to your mail server.
answered Feb 4 at 16:41
Mikey T.K.Mikey T.K.
2,17931840
Welcome to Superuser!
This will work just fine for your purposes. You're correct, you have no need of port 25 inbound since you are not receiving mail.
All of the other verification stuff that mail servers will do to make sure you're not a dirty spammer involves checks against your server's reverse DNS, SPF/DKIM/DMARC, and the message contents - none of which involve connecting back to your mail server.
answered Feb 4 at 16:41
Mikey T.K.Mikey T.K.
2,17931840
answered Feb 4 at 16:41
Mikey T.K.Mikey T.K.
2,17931840
answered Feb 4 at 16:41
Mikey T.K.Mikey T.K.
2,17931840
answered Feb 4 at 16:41
Mikey T.K.Mikey T.K.
2,17931840
2,17931840
add a comment |
add a comment |
Thanks for contributing an answer to Super User!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f1401920%2fport-25-firewall-settings-for-only-sending-emails-from-code-on-windows-server-20%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
