Viewing entries tagged with 'postfix'
Posted by Ralf Hildebrandt on 8 December 2011 | 0 Comments
Tags:
Cisco,
sux,
DKIM,
Postfix
site which was using Postfix and a CISCO ASA with "smtp protocol
fixup" enabled.
I was able to work around the delivery problems by stripping the DKIM
headers on outgoing mails (as so often).
Some interesting info got out:
I've also discussed these results with local Cisco support and they
confirmed it's a known bug (not published) with DKIM and smtp inspection
engine in latest IOS versions.
This should be fixed in some newer IOS version (8.4(10)) which is not
public yet (latest is 8.4(2)).
Over the last few days I discussed SMTP delivery problems with a czech site which was using Postfix and a CISCO ASA with "smtp protocol fixup" enabled.
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Posted by Ralf Hildebrandt on 20 June 2011 | 0 Comments
Tags:
Cisco,
sux,
DKIM,
Postfix
CISCOS's firewalls, predominantly the PIX and ASA have a feature called "smtp protocol fixup".
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Posted by Ralf Hildebrandt on 2 June 2011 | 0 Comments
Tags:
postfix,
postscreen,
fail2ban
fail2ban doesn't work properly with the new postscreen log entries, since those are different from the ones smtpd is generating.
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Posted by Ralf Hildebrandt on 19 February 2011 | 0 Comments
Tags:
postfix,
ZFS,
fail
See this bugreport by Mark Martinec:
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Posted by Ralf Hildebrandt on 26 January 2011 | 0 Comments
Tags:
postfix,
crypto
Postfix (when linked against OpenSSL 1.x) can use ECC (elliptic curve cryptography)
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Posted by Ralf Hildebrandt on 26 January 2011 | 0 Comments
Tags:
epic fail,
smf-sav,
postfix,
postscreen
Some people seem to use the smf-sav milter to implement sender address verification in Sendmail.
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Posted by Ralf Hildebrandt on 6 November 2010 | 0 Comments
Tags:
postfix,
dnswl
postfix-2.8-20101105-nonprod is supporting DNS whitelist lookups now:
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Posted by Ralf Hildebrandt on 24 September 2010 | 0 Comments
Tags:
postfix,
spenneberg
Ich bin gerade zurück von zwei Tagen "Open Source Trend Days" in Steinfurt bei Ralf Spenneberg.
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Posted by Ralf Hildebrandt on 12 September 2010 | 0 Comments
Tags:
postfix,
updateman
Today I installed the new Postfix snapshot, containing a new version of the postscreen daemon.
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Posted by Ralf Hildebrandt on 25 August 2010 | 0 Comments
Tags:
postfix,
unknown,
policyd
Today I re-implemented "fuzzy" in Perl and transformed it into a policy-daemon. "fuzzy" used to create bounces containing helpful information on what the intended recipient might have been.
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