| reply to 80289148
Re: [Cable] Reason for no Static IP Availability for Cable Inter quote:
This is incorrect. I have ran a mail server for 10 years on a non-static IP without issues.
That was correct. And this is why |
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| said by UnixMan: quote:
This is incorrect. I have ran a mail server for 10 years on a non-static IP without issues.
That was correct. And this is why Post all the links you want. The fact that it is running means it works. |
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| reply to UnixMan
said by UnixMan: quote:
This is incorrect. I have ran a mail server for 10 years on a non-static IP without issues.
That was correct. And this is why Sorry I don't click links. And I am running one so I know it works. |
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| said by 80289148:said by UnixMan: quote:
This is incorrect. I have ran a mail server for 10 years on a non-static IP without issues.
That was correct. And this is why Sorry I don't click links. And I am running one so I know it works. I'll click it for you:
Why mail to and from a dynamic DNS Host does not work reliably
No matter what they tell you, mail to and from dynamic DNS Hosts does not work reliably.
At least without TLS it isn't. Here's how it works with TLS: »www.thalmann.de/postfix-dialup.html
Receiving mail
Why receiving mail does not work reliably:
If you register your dynamic IP in a dynamic DNS provider like dyndns.org, your dyndns.org hostname is assigned your dynamic IP
If your machine loses the internet connectivity, then the hostname will still point to your former IP.
Now somebody else gets your former IP:
The computer has nothing listening on port 25:
No problem!
The computer has a properly setup MTA on port 25:
Your mail will be bounced! This is bad.
The computer has an open relay MTA on port 25:
Your mail will be relayed by this machine.
The computer has a blackhole MTA.
Your mail will be lost! This is bad.
Sending mail
Why sending mail does not work reliably:
Nowadays, many providers don't accept mail from dynamically assigned IP pools (like your dialup / DSL IP range). This means you must use the relayhost of your ISP.
--
MNSi Internet - »www.mnsi.net |
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 InssomniakThe GlitchPremium
join:2005-04-06
Cayuga, ON
kudos:1 | ^^ Everything HeadSpinning said.. |
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 LeathalPremium
join:2002-02-09
M1S0G4
kudos:2 | reply to UnixMan
said by UnixMan: quote:
This is incorrect. I have ran a mail server for 10 years on a non-static IP without issues.
That was correct. And this is why This info is only valid if you ISP doesn't allow you to relay your emails through their SMTP servers. Otherwise its not valid. |
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brad
join:2007-09-06
Etobicoke, ON | said by Leathal:This info is only valid if you ISP doesn't allow you to relay your emails through their SMTP servers. Otherwise its not valid.
The comments are about attempting to deliver mail directly from an address within a dynamic block. |
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