Re: [SLUG] Port blocking on Verizon

From: Paul M Foster (paulf@quillandmouse.com)
Date: Thu May 06 2010 - 00:08:02 EDT


On Wed, May 05, 2010 at 11:43:27PM -0400, Tommy E Craddock, Jr. wrote:

> On 5/5/2010 10:35 PM, Paul M Foster wrote:
>>
>> Well, I can tell you this: my mailhost on the internet won't listen on
>> port 587. They'll listen on port 26, if you insist. So I have a call
>> into Verizon to ask: 1) will you allow port 26, or 2) will you accept
>> mail with from addresses in a foreign domain?
>>
>> (The funny thing here is that I called Verizon FiOS support and got this
>> girl and asked her the above two questions. Now, these are pretty simple
>> questions that any tech support person should know. But no, she got my
>> phone number and will supposedly call me back when she gets the
>> answer(s). Seriously? How can even front line techs not know the
>> answers to these questions? Argh.)
>>
>> I checked with AuthSMTP, which I've used before, and they won't listen
>> on port 587. I'm still looking at other mail relay providers, but almost
>> all are more expensive.
>>
>> All this goes away if I purchase a fixed IP from Verizon. Of course, a
>> fixed IP from a hosting provider is from $1 to $5 per month. But from
>> Verizon, I'm guessing a fixed IP is probably more like $20 to $50/month.
>>
>> If I have to move hosting providers in order to make this work, I'm
>> gonna be cranky.
>>
>> I wish I could get these guys on their TOS, but I'll bet there's some
>> clause in there that allows them to block ports whenever they like.
>>
>> Grrr.
>>
>> Paul
>>
>
> Hello,
>
> As for #2 I am using Verizons FIOS SMTP servers to relay my mail from my
> domain, sigtom.com. Just added a few lines to my postfix conf files as so:
>
>
>
> Add User Authentication Support to Mail Server Configuration
>
> In /etc/postfix/main.cf, add the following to enable Postfix's
> authenticated mail client:
>
> smtp_sasl_auth_enable = yes
> smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
> smtp_sasl_security_options =
>
> Add Username and Password Settings
>
> The ISP's mail server, username, and password are kept in a separate
> file: /etc/postfix/sasl_passwd. The format is:
>
> [hostname] username:password
>
>
> For example:
>
> [smtp.broadband.rogers.com] bob123@rogers.com:hockey
>
>
> Anytime you add or change the /etc/postfix/sasl_passwd file, run the
> following command:
>
> postmap /etc/postfix/sasl_passwd
>
> Add Outbound Relay Host
>
>
> This is all from the clarkconnect Help section, howtows:
>
> http://www.clarkconnect.com/olddocs/Howtos_-_SMTP_Authentication_to_ISP

Hmm. I'll hold onto this in case I need it. I use Postfix on one of my
internal servers (the other uses Exim). If you're relaying through
Verizon, maybe they'll let me, too. Thanks for the help.

Paul

-- 
Paul M. Foster
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