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Alt-N Discussion Groups > MDaemon Discussion Groups > MDaemon Support > Archive > Mail to unknown users gets accepted and sends spam.

Gerrit Leverland

Which Alt-N products do you use?

Most recent posts: Gerrit Leverland

Socket error 10053 on specific email address - 03:56pm Apr 20, 2022 CDT - ""I believe the receiving mail server is just dropping the connection after issuing the 550 error, which results in a winsock error being logged. ""

Thanks for helping me with this issue.

Socket error 10053 on specific email address - 03:43pm Apr 20, 2022 CDT - Thanks Arron.
""According to the log, the recipient is rejecting your message because it is classifying it as spam. ""

So it (the receiver,s mailserver) then kills the connection and throws a 10053 socket error ?..

Socket error 10053 on specific email address - 02:34pm Apr 20, 2022 CDT - Wed 2022-04-20 12:07:29.034: * Socket error 10053 - Connection abort.
Wed 2022-04-20 12:07:29.034: Socket read error
Wed 2022-04-20 12:07:29.034: SMTP session terminated (Bytes in/out: 4536/24232)

Socket error 10053 on specific email address - 02:33pm Apr 20, 2022 CDT - Wed 2022-04-20 12:07:28.458: REMOTE message: pd3501000000512.msg
Wed 2022-04-20 12:07:28.458: * Session 00050708; child 0001
Wed 2022-04-20 12:07:28.459: * From: info@clientname.nl
Wed 2022-04-20 12:07:28.459: * To: info@receivername.nl
Wed 2022-04-20 12:07:28.459: * Subject: RE: apr.
Wed 2022-04-20 12:07:28.459: * Message-ID: <000001d8549e$71353cf0$539fb6d0$@clientname.nl>
Wed 2022-04-20 12:07:28.459: * Size: 23509; <e:\apps\mdaemon\queues\remote\pd3501000000512.msg>
Wed 2022-04-20 12:07:28.467: Resolving MX record for receivername.nl (DNS Server: 2a01:7c8:7000:195:0:8:195:...
Wed 2022-04-20 12:07:28.471: * P=010 S=000 D=receivername.nl TTL=(5) MX=[mail.receivername.nl]
Wed 2022-04-20 12:07:28.471: Attempting SMTP connection to mail.receivername.nl
Wed 2022-04-20 12:07:28.471: Resolving A record for mail.receivername.nl (DNS Server: 2a01:7c8:7000:195:0:8:195:...

Socket error 10053 on specific email address - 03:56pm Apr 20, 2022 CDT - Hi,

I,m experiencing socket 10053 errors only on a specific email address. The rest of the mail works fine. I did adjust the MTU size to 1472 and did some test to see if the ping then gets through (I wasn`t having troubles with other email addresses with MTU 1500)...

OK


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