Re: Delivery issues

Tech Tip: Click here to run a free scan for Windows Errors and optimize PC performance



On Apr 8, 5:11 pm, Jamestechman <jamestech...@xxxxxxxxx> wrote:
Some SPAM filters do forward lookups on your HELO; if you do HELO I'm
barracuda.yurconic.com and that does not resolve; that domain may
think it's SPAM and can take subsequent actions such as greylisting. I
would take this of this first.

James Chong (MVP)
MCITP | EMA; MCSE | M+, S+,
Security+, Project+, ITIL
msexchangetips.blogspot.com

On Apr 8, 5:08 pm, TaylorGaffney <taylor.gaff...@xxxxxxxxx> wrote:



On Apr 8, 4:59 pm, Jamestechman <jamestech...@xxxxxxxxx> wrote:

This doens't seem to be fixed yet.

Mail server host name in greeting WARNING: One or more of your
mailservers is claiming to be a host other than what it really is (the
SMTP greeting should be a 3-digit code, followed by a space or a dash,
then the host name). If your mailserver sends out E-mail using this
domain in its EHLO or HELO, your E-mail might get blocked by anti-spam
software. This is also a technical violation of RFC821 4.3 (and
RFC2821 4.3.1). Note that the hostname given in the SMTP greeting
should have an A record pointing back to the same server. Note that
this one test may use a cached DNS record.

mail.yurconic.com claims to be non-existent host
barracuda.yurconic.com: <br /> 220 barracuda.yurconic.com ESMTP
(0e2a895ef351c4ab076702027555a00a) <br />

James Chong (MVP)
MCITP | EMA; MCSE | M+, S+,
Security+, Project+, ITIL
msexchangetips.blogspot.com

On Apr 8, 4:08 pm, TaylorGaffney <taylor.gaff...@xxxxxxxxx> wrote:

I had posted a topic a week back, and still having issues with mail
delivery to a specific account outside of our exchange server.

I have users that use xx...@xxxxxxxxxxxx at home, when they attempt to
send a message to it from our exchange server which is
x...@xxxxxxxxxxxx it takes days upon days to receive and I think as of
now they arent receiving them at all.  I have done everything to see
where the problem is and just simply out of answers.  I was told we
are greylisted but why only to 1 company?  I just need to fix this
a.s.a.p because the owner of the company uses the outside mail at home
too.

Thanks.- Hide quoted text -

- Show quoted text -

Barracuda only filters incoming mail, why would that affect any
outgoing mail?- Hide quoted text -

- Show quoted text -- Hide quoted text -

- Show quoted text -

Ok I understand, so how do I fix this?
.



Relevant Pages

  • Re: postgrey question
    ... > It is up to the user/isp combination to fix. ... greylisting itself is not a panacea and works better in conjunction ... with something like spam assassin to only grey list suspected spam. ... Chad Leigh -- Shire.Net LLC ...
    (freebsd-questions)
  • Re: Question regarding greylisting
    ... SMTP greylisting problem on Exchange Server 2003 SP2 ...
    (microsoft.public.exchange.admin)
  • Exchange 2003 Greylist Issue...
    ... I'm experiencing the greylisting issue with my Exchange 2003 Server, ... where users are receiving NDRs for messages they thought were sent ... after the Exchange Server is restarted. ... Does this hotfix resolve the greylisting issue completely, ...
    (microsoft.public.exchange.admin)
  • Re: Exchange 2003 Greylist Issue...
    ... You can also tweak the GlitchRetrySeconds in addition to the hotfix. ... Exchange 2003 sp2 and greylisting... ... How to Configure Glitch Retry Interval in Exchange Server 2003 ... I'm experiencing the greylisting issue with my Exchange 2003 Server, ...
    (microsoft.public.exchange.admin)
  • Re: #4.0.0 smtp;421 Greylisted!! Please try again in a few minutes.
    ... greylisting. ... Is there any fix available from microsoft or there are ... just the described workarounds? ...
    (microsoft.public.exchange.admin)