Hot!Connection reset

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mwanza_k
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2021/02/24 22:01:55 (permalink)
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Connection reset

Hi good people
 
I have been struggling with this error "Stat=Deferred: Connection reset by *****.com (Reason:451 4.4.1 reply: read error from *****.com)" for quite sometime, unit is FortiMail VM08, note this only happens when i send to certain domains, any help with this will be greatly appreciated.
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marchand
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Re: Connection reset 2021/02/24 23:07:13 (permalink)
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If you haven't already checked, see if your ip is not blacklisted
 
http://www.anti-abuse.org/multi-rbl-check/
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mwanza_k
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Re: Connection reset 2021/02/24 23:52:55 (permalink)
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Hi, thanks for the response, funny thing the i.p isnt blacklisted
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marchand
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Re: Connection reset 2021/02/25 00:16:10 (permalink)
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Are you sure the problem is related to fortimail  ?
If you send mails without using fortimail, everything works ok ?
 
 
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mwanza_k
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Re: Connection reset 2021/02/25 00:29:52 (permalink)
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when we bypass fortimail, emails go through
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marchand
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Re: Connection reset 2021/02/25 01:38:02 (permalink)
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I think you should also check if the mail server reports any configuration errors .
https://mxtoolbox.com/diagnostic.aspx
 
 
 
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abelio
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Re: Connection reset 2021/02/25 08:28:04 (permalink)
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mwanza_k
Hi good people
 
I have been struggling with this error "Stat=Deferred: Connection reset by *****.com (Reason:451 4.4.1 reply: read error from *****.com)" for quite sometime, unit is FortiMail VM08, note this only happens when i send to certain domains, any help with this will be greatly appreciated.




4xx error code are designed for temporary errors
 
Maybe is only greylisting feature enabled and not a 'problem'
You should check your logs deeply; use cross  search feature with right button over specific log line.
 

regards
--
Abel
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