Re: LUG: Sendmail and Squirrelmail - Mon, 28 Nov 2005 10:00:49 -0500

Subject : Re: LUG: Sendmail and Squirrelmail

From : mark@thefowles.[redacted]

Date : Mon, 28 Nov 2005 10:00:49 -0500

are you able to do a lookup on your domain from the internet? Just curious
- mail.yourdomain.com .... (this should see the mx record) - The rest of
what you;ve done seems ok (Sending the mail).

You need 25, 109/110 open in your firewall (I think) .. along with 80, and
53 (DNS) .....

- Mark

> Hi everyone,
>
> I am somewhat new to linux so please forgive if this is a stupid or newbie
> question. I am setting up a fedora core 4 linux server to run sendmail
> and
> squirrel mail for webmail. I also have dovecot installed but I'm not 100%
> sure that I need it.
>
> If my understanding of the mail server is correct, I need to be running
> sendmail (its the MTA), dovecot (for IMAP/POP3 protocol), and squirrelmail
> (webmail) to have this mail server setup properly, is this correct? I
> want
> my users to use imap to get their mail for security reasons. We only have
> about 20 users or so will be using this but they do a lot of email. Am I
> correct in feeling that I need all three of these programs to get the mail
> system and webmail running?
>
> If I understand the concepts, sendmail is responsible for handling the
> incoming and outgoing mail. Dovecot is what allows the users to access
> their mail stored on the server via the pop3 or imap protocols, and
> squirrelmail allows them to access the mail via imap using a web interface
> (for when they are at home or on the road). All three of these are
> necessary for mail to run properly except squirrelmail (although it is
> needed for the webmail). Is this correct?
>
> In order to setup this server to accept mail for a domain, I know that I
> have to have the MX record pointed to its ip address. No problem there.
>
> I am able to connect using imap and send mail from inside the network but
> I'm having trouble receiving mail from outside the intranet. I have a
> small
> hole poked in our sites firewall to allow smtp and http traffic.
>
> I have a couple test accounts setup and can send mail to outside addresses
> and internal address just fine, but receiving mail seems to have a problem
> from outside. Are the smtp and http protocols ports the only ones I need
> open on the firewall? I believe that they are but want to double check
> the
> theory.
>
> If I type in an address of username@216.0.0.[redacted] (ip address is not the
> real
> address), shouldn't mail come to the server?
>
> Also, any suggestions on an easy to use and fairly secure ldap server (for
> a
> central address book) would also be appreciated or do we not need LDAP for
> a
> central address book.
>
> Any help would be most greatly appreciated.
>
> Sincerely,
>
> Brian
>
> P.S. Telling me to RTFM is not helpful. I've read it. If thats all you
> can say, please don't reply at all. Sorry about this but I've had several
> rude replies from the internet on so called helpsites. Hopefully this
> will
> be different.
>
> --
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>
>

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Re: LUG: Sendmail and Squirrelmail