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View Poll Results: Best/Most Secure Email Package
SendMail 0 0%
PostFix 2 25.00%
QMail 0 0%
Other (please list) 3 37.50%
I have no idea but I like to vote anyways 3 37.50%
Voters: 8. You may not vote on this poll

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Old 23rd July 2013
EverydayDiesel EverydayDiesel is offline
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Default Most Secure Email Server Package

I know this is some what of an opinion (and configuration settings), but in your experience, which of the email packages have you had the best 'secure' results with?
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Old 23rd July 2013
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jggimi jggimi is offline
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I switched from Sendmail to OpenSMTPD a couple years ago and prefer its simple configuration. From that website, here are the project's goals:
Quote:
  • Be as secure as possible. Code carefully, do strict validity checks especially in the network input path, and use bounded buffer operations. Use privilege separation to mitigate the effects of possible security bugs.
  • Reliability is extremely important, any e-mail that OpenSMTPD has accepted has to be handled with care and must not be lost.
  • Provide a lean implementation, sufficient for a majority. Don't try to support each and every obscure usage case, but cover the typical ones.
  • Provide a powerful and easy to understand configuration language.
  • Be fast and efficient. OpenSMTPD must be able to handle large queues with reasonable performances.
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Old 23rd July 2013
EverydayDiesel EverydayDiesel is offline
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Thanks for the response.

Will it tell you if a particular email was delivered or rejected?
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Old 23rd July 2013
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jggimi jggimi is offline
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l can answer a qualified "yes" because there are many types of messages: unacceptable messages between MTAs or MTA->MUA, undeliverable after receipt, mail logs, etc. If you are specific, I can answer from experience or from test.
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Old 24th July 2013
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I voted for "other" as I recently switched from Sendmail to OpenSMTPD as well. I probably don't have nearly as much experience with email servers as jggimi, but I can say that 99% of the problems I've seen with email servers is misconfiguration (open relay or the like), so the one your email admin is most comfortable with is probably the best choice =)

OpenSMTPD is pretty hard to beat in that respect.
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Old 24th July 2013
thomasw_ thomasw_ is offline
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I do agree with Jonathon's remark regarding the email admin's comfort level with the software. Then there's functionality; as long as OpenSMTPD will do what is needed for your email servering, I'd use it. I wish it had been around back when I first had to learn Sendmail. I used sendmail for over 10 years, but I have switched to OpenSMTPD. Though it is still quite new to me, there's no denying that its configuration and design make for more seamless use; it is robust but simple and elegant to learn and use when I compare it to sendmail.

I have no insight on Postfix or Qmail.
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