Thanks Niki!

My sendmail uses port 587 for mail submission as well. However receiving email is an entirely other matter. If your ISP blocks port 25 then other mail servers will not find your server for delivering emails.

Eric

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This is starting to sound kind of trivial, is there an all in one solution so to speak with out the use of online services for some kind of proxy? No wonder Assange doesn't use email.

No idea what your question is about.

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You're not as think as I stoned you are?

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you made my day!

I have read some "epic threads" about systemd, none ever began with such eloquence.

, I wish.

I think you're asking if you can send/receive mail directly to/from other mail servers. Since you have a residential dynamic IP address, the answer is no. If you had a server with a static public IP and FQDN, you could do this like any other business.

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It's actually not that black & white. Even if you have a consumer Internet subscription and a dynamic IP address (like I have myself) these dynamic IP addresses are often long-lived. If you register a hostname at one of the many Dynamic-DNS services like dyndns.org then you will be able to use a FQDN even with a changing IP address.
And if you are keeping a close eye on IP address changes, you can even use your own domain name and assign a host to your (potentially changing) IP address, as long as you keep its TTL at small values and change the host definition whenever you notice a change in your IP address.

Eric

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So I would have to manually change my dyndns.org settings whenever my ip address changed? I think for me that's a problem because I use Verizon Fios and my dhcp lease is usally 24 hours! If I'm browsing late at night sometimes I actually see the router turn off and back on automatically ( I'm assuming this is how the lease is refreshed) and Voila new ip address.

I could "Borrow the neighbors connection" and use it as a simple mail server as I just happened to notice that they have static ip . But I'd rather not for obvious reasons, however if it would be a question of having to constantly manage my dns and ip setting, then I would definitely consider it.

Again a matter of Read The Fucking Documentation. This is Slackware, do your homework first. On http://sourceforge.net/p/ddclient/wiki/Home/ you will find that "DDclient is a Perl client used to update dynamic DNS entries for accounts on Dynamic DNS Network Services' free DNS service. [...] It has the capability to update more than just dyndns and it can fetch your WAN-ipaddress in a few different ways."

Eric

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Jeez, thanks. sorry for bothering you. Just figured while we were on the topic I'd ask.

Actually, dyndns.org isn't what it used to be (no more free dns ).. But, you can use http://www.dnsdynamic.org/

You don't have to manually update your settings every time ... That's why scripts exist...

My honest opinion thought, and don't take it the wrong way.. Play around.. put up your mail server.. It's a fun thing to do and learn, but don't actually try to keep it up and running.. Most of your questions could have been asked in a Google searchbox and you clearly aren't making an effort to actually teach yourself the process as much as trying to reach an end goal.. With mail servers, even small/personal mail servers, this is not really an option.. You have to at least have some knowledge or will to actually learn what's going on behind the scenes...

Anyway, have fun..

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I'm starting it now thank's for the help everyone, maybe we should turn this thread into a howto for mail servers on slackware with dynamic ip!