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R=dnslookup T=remote_smtp defer (-53): retry time not reached for any host

gearloose
Hi,

since a long time with no problems...here's another problem :-)

It driving me nuts, we try to sent a mail from our company to a special host and the mails are not going out. They stay in the queue and could not be delivired.

from the live log: R=dnslookup T=remote_smtp defer (-53): retry time not reached for any host

funnily enough they can send us mails.

I flushed the DNS cache, no effect. Version of the Firewall ist 7.510.

What elso can I do?


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  • 0
    I think perhaps the company doesn't have their DNS records configured correctly.  Can you send me the name of their domain?  Email is my username at gmail or at my domain.

    MfG - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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  • 0
    I think perhaps the company doesn't have their DNS records configured correctly.  Can you send me the name of their domain?  Email is my username at gmail or at my domain.

    MfG - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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