How to enable Incoming mail to postfix on port 587?

[Bret Busby]

On 25/10/2021, Bret Busby <bret.busby at gmail.com> wrote:
> On 25/10/2021, David Fletcher <dave at thefletchers.net> wrote:
>> On Mon, 2021-10-25 at 04:29 +0800, Bret Busby wrote:
>>> On 24/10/2021, David Fletcher <dave at thefletchers.net> wrote:
>>> > Hello,
>>> >
>>> > I've been having troubles with the WiFi dropping out on my virgin
>>> > superhub 2 for a while so phoned them to complain about it. They've
>>> > sent out a hub 4 and a new TV box.
>>> >
>>> > Today I'm aiming to get the hub 4 configured like the old superhub
>>> > 2
>>> > before they send a technician here tomorrow. I've got it set to my
>>> > network address and DHCP range then started trying to get the port
>>> > forwards set up.
>>> >
>>> > I've been using port 25 incoming to my postfix server for years and
>>> > it's always worked fine but the damned hub 4 puts up a message in
>>> > red
>>> > saying that port 25 and a bunch of others are "reserved". What???
>>> >
>>> > So far I've tried enabling port 587 and disabling port 25 on the
>>> > superhub 2 and making the adjustments I've found by Google
>>> > searching
>>> > the problem to the master.cf file:-
>>> > changing smtp towards the top to 587
>>> > enabling the submission line
>>> > enabling the smtps line
>>> >
>>> > So far cannot get it to work. Obviously I don't want to plug in the
>>> > damned hub 2 until I have confidence that email will be working
>>> > when I
>>> > do!
>>> >
>>> > Any further suggestions please? I'm running Ubuntu Server 20.04.3
>>> > LTS
>>> >
>>> > Thanks everyone
>>> >
>>> > Dave
>>> >
>>>
>>> If you are running postfix, then it is in your interest to be
>>> subscribed also to the postfix mailing list.
>>>
>>> Because your message did not indicate in which country you are
>>> located, whilst, to me, it appears that your virgin access is a heap
>>> of <expletive>, perhaps, it may be time to try an alternative,
>>> depending on the available alternatives for wherever you are located.
>>
>> I'm in England.
>>
>> It's only very rarely (years between) that I normally have to involve
>> myself with this stuff so I forget... I think I might have been talking
>> BS above. Looking in the email config that I have on this laptop I use
>> port 465 to send outgoing email from anywhere using the secure SMTP
>> server at 1&1, which needs ID and passcode as does, I expect port 587.
>> Therefore I am now assuming that port 25 is the only port that can be
>> used for receiving incoming mail on my little home server. Therefore
>> disabling port 25 on a home router is a cretinous thing to do.
>>
>> I did also ask on the local LUG mailing list and it seems that "vermin
>> media" is getting a bad reputation. It seems that I am not at all
>> unusual in having WiFi that keeps dropping out. It's down again right
>> now as I type this.
>>
>> Their other division, mobile, I dropped a couple of years ago. Inspired
>> by Paul's letter of complaint to NTL, their predecessor, I ended up
>> composing a "Dear Cretins" letter to their customer services director
>> after they sent a letter demanding settlement of my 22 pence debt. I
>> taped the 22 pence in coins to the bottom of the letter.
>>
>> The general opinion of the replies I have had from the Wiltshire LUG is
>> that I should be talking to either Andrews and Arnold or Zen Internet
>> which I will likely do tomorrow.
>>
>> Dave
>>
>
> It is a few years since I ran my own mail server here, for which, I
> ran postfix, rather than sendmail.
>
> If I am in error in anything I sat below, one of the more
> knowledgeable people on this list (you should really be using the
> postfix mailing list, for this query), could correct me.
>
> See http://www.postfix.org/lists.html for information about the
> poostfix mailig lists.  The users and announce lists are the most
> applicable.
>
> "
> postfix-announce at postfix.org: READ-ONLY list for announcements of
> Postfix releases and updates.
>
> Open subscription, no posting.
>
> postfix-users at postfix.org: for discussions about using Postfix:
> questions, problem reports, or feature requests.
>
> Open subscription, unmoderated posting by members only.
> "
>
>
> On the mailserver, postfix was for sending mail out, and fetchmail was
> for bringing the mail down. Also needed, was procmail, for setting up
> filters.
>
> fetchmail is where the settings are configured for bringing mail down
> (POP or IMAP server., etc), and postfix for configuring settings for
> sending mail out (SMTP server).
>
> You will need to get the settings from, and/or check them with, your
> web hosting provider - whoever hosts your thefletchers.net domain
> name.
>
> --
> Bret Busby
> Armadale
> West Australia
> (UTC+0800)
> ..............
>

You might be interested in also viewing
http://www.postfix.org/docs.html

-- 
Bret Busby
Armadale
West Australia
(UTC+0800)
..............