[aklug] Re: messing with Sendmail

In the case of port 587 it uses TLS, so connection to the server
first, then encryption starts.

Here is some info:

http://www.sendmail.org/~ca/email/starttls.html
http://www.checktls.com/testreceiver.html

Hope that is what you are looking for.

I don't want to start a flame war, but I don't think postfix is any easier.

But I've been using sendmail for quite a while, so I do have a bias.

Mike B.

Quoting Christopher Howard <ch.howard@zoho.com>:

> I hate to break it to you, but you definitely are not normal. Anyone
> who derives pleasure from tweaking their sendmail configuration
> belongs to a unique class comprising about 0.002% of the population.
>
> Just curious... does it encrypt the SMTP session?
>
> On Wed, 07 Jan 2015 23:03:12 -0900
> Mike <alaskabarsalou@gmail.com> wrote:
>
>>
>> OK, as soon as you read the subject line, you groaned...I know...its
>> OK. I'm perfectly normal.
>>
>> Everyone once in a while, I feel like fooling around with my
>> sendmail configuration to try different things.
>>
>> Yes, I really am normal.
>>
>> So what I wanted to do was sendmail to Google's smtp server. I
>> found this document:
>>
>> https://support.google.com/a/answer/176600?hl=en
>>
>> Which implies that as long as I have an account to authenticate
>> with, I can send mail through their server and it will be
>> delivered...AS LONG AS I use port 465 or 587.
>>
>> However, sendmail sends stuff to port 25 by default, so I had to
>> figure out how to change the port.
>>
>> Also, since I had a smarthost already configured and didn't want to
>> mess with that, I decided to use mailertable to deliver mail to a
>> specific domain through their server.
>>
>> This means I had to create a new mailer by copying the existing smtp
>> entry in the .cf file like this and placed it after all of the other
>> mailer definitions in the .mc file:
>>
>> Msmtp-587, P=[IPC], F=mDFMuX, S=EnvFromSMTP/HdrFromSMTP,
>> R=EnvToSMTP, E=\r\n, L=990,
>> T=DNS/RFC822/SMTP,
>> A=TCP $h 587
>>
>> and my mailertable has the entry:
>>
>> destination.domain.com smtp-587:smtp.gmail.com
>>
>>
>> Note: I believe there has to be at least one tab before the stuff on
>> the right...so copying and pasting this might not work.
>>
>> restarting sendmail on the Ubuntu box rebuilds the mailertable and
>> the sendmail.cf file.
>>
>> So, if you like to mess with sendmail and more clarification is
>> needed or you have questions, let me know because I may be assuming
>> something that isn't obvious.
>>
>> Mike B.
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>>
>
>
>
> --
> Christopher Howard
>
> ---------
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Received on Wed Jan 7 23:49:33 2015