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Contribs.org Forums => Koozali SME Server 10.x => Topic started by: gjverheij on September 10, 2021, 09:43:29 PM

Title: 450 Temporary address resolution failure by fallback, nothing in log qmail ofSME
Post by: gjverheij on September 10, 2021, 09:43:29 PM

Dear all,

Unfortunately my sd drive from the sme server has failed. Fortunately, I was able to perform a new installation using my backup. A fallback server is included in the DNS for the mail. However, the fallback server is unable to deliver this mail. Unfortunately I can't find anything in /var/log/qmail/current. The fallback server administrator found 450 Temporary address resolution failure (#4.4.3) with my sme server name. Anyway, installed the Contrib Email Whitelist-Blacklist Control (wbl) and included the fallback server in the withlist. But unfortunately no result or error message. Does anyone have any tips for me?

Best Gert-Jan

Title: Re: 450 Temporary address resolution failure by fallback, nothing in log qmail ofSME
Post by: TerryF on September 11, 2021, 12:27:02 AM

I think some more info will hel;p..hardware, lan setup, server mode, all helps to try and understand

Title: Re: 450 Temporary address resolution failure by fallback, nothing in log qmail ofSME
Post by: gjverheij on September 11, 2021, 12:55:52 PM

Quote from: TerryF on September 11, 2021, 12:27:02 AM

I think some more info will hel;p..hardware, lan setup, server mode, all helps to try and understand

Thanks Terry,

so more info:
software: sme 10, 64 bit contribs: wbl, Server modus: serveronly
small family server: Intel Atom® Processor D510 (1M Cache, 1.66 GHz), 4gb ram, ssd
lan: ziggo network connection, ziggo modem in brigde mode, own router with nat and portforwarding for port25 to sme

setup works well since sme 4.2, since 2010 with this hardware, only ssd changed last week (-;

Gert-Jan

Title: Re: 450 Temporary address resolution failure by fallback, nothing in log qmail ofSME
Post by: gjverheij on September 11, 2021, 07:05:07 PM

hi all,

I am now two steps further:

1. Did another short test after installing the contrib wbl. And have included the fallback server name or ip address in the fields: qpsmtpd whitelisthosts,qpsmtpd whitelisthelo, qpsmtpd whitelistsenders and spamassassin whitelist_from. The messages were now delivered and this was visible in var/log/qmail/current.

2. The fallback server should keep a mail message for 5 days, this turns out to be 12 hours. The deadline for delivery had already passed.

My tentative conclusion: the fallback server settings should be revised. I expected that it should have been received without any whitelisting. This once worked, I should have tested this regularly. The time limit of 12 hours was short. Fortunately, a message of inability to deliver was sent to the senders.

My remaining question: Could I have seen a log other than var/log/qmail/current on my SME server that the delivery failed?

Best Gert-Jan

Title: Re: 450 Temporary address resolution failure by fallback, nothing in log qmail ofSME
Post by: TerryF on September 11, 2021, 09:24:10 PM

Quote from: gjverheij on September 11, 2021, 07:05:07 PM

My remaining question: Could I have seen a log other than var/log/qmail/current on my SME server that the delivery failed?

/var/log/qpsmtpd may be worthwhile

Title: Re: 450 Temporary address resolution failure by fallback, nothing in log qmail ofSME
Post by: gjverheij on September 11, 2021, 10:05:50 PM

hi Terry

bingo, found in /var/log/qpsmtpd learnd a lot today and i have to contact the administrator of the fallback server. thanks a lot,

best, Gert-Jan

Title: Re: 450 Temporary address resolution failure by fallback, nothing in log qmail ofSME
Post by: TerryF on September 11, 2021, 10:21:02 PM

mate, its always a good day when you learn something that is new, the older you get the joy just goes up a notch :-)

have fun