autoconfig autodiscover port number

[infomaniac50]

Is there a way to change the default SMTP port number for autoconfig and autodiscover requests? Currently it sends 465 but I need it to send 587.

I can't find any documentation on the cgi scripts themselves. Is the source code for these scripts located somewhere on the server, github or simply proprietary?

 

[Infopro]

Have you changed the port number here?
WHM »Service Configuration »Service Manager, Exim Mail Server (on another port)

 

[infomaniac50]

Have you changed the port number here?
WHM »Service Configuration »Service Manager, Exim Mail Server (on another port)

I changed the port number just now with no effect. I checked the enabled box but not the monitor. I set the field to 587 only. I did not add any other ports separated by commas.

Sending a POST request with XML data is what I used to test it.

https://<!-- Host Address -->/autodiscover/autodiscover.xml

<?xml version="1.0" encoding="utf-8" ?>
<Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006">
    <Request>
        <EMailAddress><!-- Email Address --></EMailAddress>
        <AcceptableResponseSchema>http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a</AcceptableResponseSchema>
    </Request>
</Autodiscover>

I got this response.

<Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006">
    <Response xmlns="http://schemas.microsoft.com/exchange/autodiscover/outlook/responseschema/2006a">
        <User>
            <DisplayName><!-- Email Address --></DisplayName>
        </User>
        <Account>
            <AccountType>email</AccountType>
            <Action>settings</Action>
            <Protocol>
                <Type>IMAP</Type>
                <Server><!-- Host Address --></Server>
                <Port>993</Port>
                <DomainRequired>off</DomainRequired>
                <SPA>off</SPA>
                <SSL>on</SSL>
                <AuthRequired>on</AuthRequired>
                <LoginName><!-- Email Address --></LoginName>
            </Protocol>
            <Protocol>
                <Type>SMTP</Type>
                <Server><!-- Email Address --></Server>
                <Port>465</Port>
                <DomainRequired>off</DomainRequired>
                <SPA>off</SPA>
                <SSL>on</SSL>
                <AuthRequired>on</AuthRequired>
                <LoginName><!-- Email Address --></LoginName>
            </Protocol>
        </Account>
    </Response>
</Autodiscover>

 

[Infopro]

I changed the port number

Did you open said port in your firewall as well?

 

[infomaniac50]

Did you open said port in your firewall as well?

Yes. We don't use port 465 and 587 has been in use for some time now. As part of a PCI compliance process we disabled TLS on connect by setting it to port 466 in Exim's advanced configuration.

The standard port number for submission is 587 and 465 has been deprecated for quite a while now.

tools.ietf.org/html/rfc6409

tools.ietf.org/html/rfc2487

en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol#Ports

 

[infomaniac50]

Have you determined anything in regards to this issue?

 

[Infopro]

Please feel free to open a ticket directly to cPanel Technical Support instead of waiting on a reply to this thread.

 

[RWH Tech]

Have you determined anything in regards to this issue?

Have you opened the ticket and obtained a resolution?

 

[cPanelMichael]

To update, the user was advised that this feature does not currently offer the ability to implement a custom port number. The advice provided was to add feedback and vote for the following feature request that seeks out the ability to customize this information:

Custom autoconfig.domain.com

Thank you.