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* Don't bounce unverified recipients upon 4xx errors.Guilhem Moulin2015-06-111
| | | | | | | We don't want to bounce messages for which the recipient(s)' MTA replies 451 due to some greylisting in place. We would like to accept 451 alone, but unfortunately it's not possible to bounce unverified recipients due to DNS or networking errors.
* Use recipient address verification probes.Guilhem Moulin2015-06-071
| | | | | | | This is specially useful for mailing lists and the webmail, since it prevents our outgoing gateway from accepting mails known to be bouncing. However the downside is that it adds a delay of up to 6s after the RCPT TO command.
* logjam mitigation.Guilhem Moulin2015-06-071
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* Upgrade Postfix config to Jessie (MSA & outgoing proxy).Guilhem Moulin2015-06-071
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* Remove reject_unknown_sender_domain from the MDA and outgoing SMTP.Guilhem Moulin2015-06-071
| | | | | | | | | | We already removed it from the MX:es (see 32e605d4); we need to remove it from the MDA and outgoing SMTP as well, otherwise mails could bounce or get stuck in the middle (the're rejected with 450: deferred by default). However we can keep the restriction on the entry points (MSA and webmail).
* Hash certs using a lookup in the template instead of add a new task.Guilhem Moulin2015-06-071
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* Tell vim the underlying filetype of templates for syntax highlighting.Guilhem Moulin2015-06-071
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* Install amavisd-new on the outgoing SMTP proxy.Guilhem Moulin2015-06-071
| | | | For DKIM signing and virus checking.
* Replace IPSec tunnels by app-level ephemeral TLS sessions.Guilhem Moulin2015-06-072
| | | | | For some reason giraff doesn't like IPSec. App-level TLS sessions are less efficient, but thanks to ansible it still scales well.
* Outgoing SMTP proxy.Guilhem Moulin2015-06-071
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