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Mike Kazantsev a écrit : |
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> On Sun, 25 Jan 2009 18:11:04 +0100 |
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> laurent <laurent@××××××××××××.org> wrote: |
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> |
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> |
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>> Now I see more what ssmtp and msmtp are about so I have some questions. |
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>> Is it possible to use an existing smtp port with them and be able to |
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>> change the sender e-mail from my apache application ? |
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>> |
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>> Like it's transparently sending e-mail from my existing smtp account |
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>> with my authentification but with someone else e-mail. |
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>> |
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> |
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> Yes, basically you can just invoke 'sendmail box@××××××.etc' and type |
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> message with all the headers you need - 'to:', 'from:', 'subject:' etc |
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> to stdin. |
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> Of course, every language has some wrappers to simplify that process. |
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> |
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I installed and configured postfix. It sends mail localy and on external |
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mailbox. !! I'm glad !! |
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dig -x myip |
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answer back my domain name. I don't know if I am being behinde a |
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firewall. It's a dedicated server on a domain own by my host service. |
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I don't get e-mail when replyed from external mailbox. |
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security-wise: Is there any stuff to do, not by default, to secure my |
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smtp server to not be used from outside ? |
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> |
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> |
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>> For MTA: it involves installing a DNS server ? |
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>> |
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> |
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> Not really. |
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> Your IP belongs to an ISP, and it's DNS server has the authority for |
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> that address. So, if anyone (e.g. mail server) is asking any (other) DNS |
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> server "who's that guy?", that DNS will go to your provider's DNS and |
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> ask "so, it's one of yours, who is it?" and it'll be in position to |
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> either return some valid name (that's rarely free), delegate the task |
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> to some other DNS (mostly the case with IP ranges, bought by some |
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> organizations) or just shrug, which is often the case with common users. |
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> |
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> So the answer is likely - "it won't matter, you won't get a name", but |
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> that's entirely up to your ISP. |
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> |
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> That said, there are always possibilities to use the services of (or set |
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> up) some relay server or buy dedicated IP and tunnel traffic through |
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> it, but that's quite beyond the scope of question, I believe. |
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> |
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Tunneling traffic, I'll keep that for other spare time in the year :) |
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L |
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