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Can't send mails to gmail-adresses

Hello to everyone!

Since one week we have a big problem to send emails to gmail.com adresses. Every other domain works as receiver of the mails.
We use Groupwise 14.2.2.1.

I have checked, if we are blacklisted on mxtoolbox.com. We are not blacklisted.

The logfile looks like this:

09:23:58 6624 DMN: MSG 635620 Attempting to connect to gmail-smtp-in.l.google.com
09:23:58 6624 DMN: MSG 635620 Connected to [74.125.133.27] (gmail-smtp-in.l.google.com)
09:23:58 6624 DMN: MSG 635620 Send Failure: 550 5.7.1 information. h24si8690157wrb.185 - gsmtp
09:23:58 6624 DMN: MSG 635620 SMTP session ended: [74.125.133.27] (gmail-smtp-in.l.google.com)
09:24:08 706C MSG 635620 Analyzing result file: /grpwise/novell/gwlbs/wpgate/gwia/result/r9cb6e2e.764
09:24:08 706C MSG 635620 Command: gmail.com
09:24:08 706C MSG 635620 Response: 220 mx.google.com ESMTP h24si8690157wrb.185 - gsmtp
09:24:08 706C MSG 635620 Command: EHLO mail.lbs-voitsberg.ac.at
09:24:08 706C MSG 635620 Response: 250 ok
09:24:08 706C MSG 635620 Command: MAIL FROM:<sender.email@lbs-voitsberg.ac.at>
09:24:08 706C MSG 635620 Response: 250 2.1.0 OK h24si8690157wrb.185 - gsmtp
09:24:08 706C MSG 635620 Command: RCPT TO:<recipient.email@gmail.com>
09:24:08 706C MSG 635620 Response: 250 2.1.5 OK h24si8690157wrb.185 - gsmtp
09:24:08 706C MSG 635620 Command: DATA
09:24:08 706C MSG 635620 Response: 354 Go ahead h24si8690157wrb.185 - gsmtp
09:24:08 706C MSG 635620 Detected error on SMTP command
09:24:08 706C MSG 635620 Command: Data...
09:24:08 706C MSG 635620 Response: 550 5.7.1 information. h24si8690157wrb.185 - gsmtp

09:24:08 706C Building undeliverable message

I have no idea what's going wrong? The same configuration works since years.

Do you have any ideas?

Best regards
Manfred
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Re: Can't send mails to gmail-adresses

In article <mazgan.85h79z@no-mx.forums.microfocus.com>, Mazgan wrote:
> 09:24:08 706C MSG 635620 RESPONSE: 550 5.7.1 INFORMATION.
> H24SI8690157WRB.185 - GSMTP


so their system has some how decided that they don't like you anymore.
One strong possiblity is your lack of an SPF or DKIM records. Just
getting at least one of those will help moving forward and might be
just what is the cause here.
Please confirm the assumption that your outbound IP is the same as your
inbound IP that does look clear to me.

Is this problem for even the smallest and simplest test message? Such
as one that just says "Hello World" without any sig attached?


Andy of
http://KonecnyConsulting.ca in Toronto
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http://forums.novell.com/member.php/75037-konecnya
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Re: Can't send mails to gmail-adresses

Hi Andy,

thank you for helping.
The Inbound IP is the same as the Outbound IP.

We don't use SPF or DKIM Records. But I think we will do this in near future.
I found a Google support sheet to contact and ask Google. And now I'm waiting for an answer ...

It's only odd, because our server isn't on any blacklist.

Best regards
Manfred
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Re: Can't send mails to gmail-adresses

In article <mazgan.85wdkn@no-mx.forums.microfocus.com>, Mazgan wrote:
> It's only odd, because our server isn't on any blacklist.


Blanklists are only one of a great many details that are checked by
various email cleansing systems.
There are other ways of checking the reputation of the sending system,
with well formed SPF records being one of those checks for reputation.
While waiting for word back from Google, it is worth your effort to
read-up on SPF http://www.openspf.org/ an look on adding an SPF record
to your DNS. If your organization only sends out email for your gwia
that is your MX record, then all you need to do is add a DNS TXT record
on your DNS of "v=spf1 mx -all"
This helps your reputation in other ways in that it makes it so much
harder for others' to send email pretending to be from your
organization when they aren't.



Andy of
http://KonecnyConsulting.ca in Toronto
Knowledge Partner
http://forums.novell.com/member.php/75037-konecnya
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Re: Can't send mails to gmail-adresses

mazgan wrote:

> It's only odd, because our server isn't on any blacklist.


Hi Manfred,

This is a great site for diagnosing SMTP issues.
https://mxtoolbox.com/

Once you do the initial MX lookup, you will have additional diagnostics
you can access.

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