Hello,
I recently migrated my mailbox from self-hosted Mailcow to self-hosted Mail-in-a-Box.
Today I received this error when sending a message that didn’t occur before migration; the error message says:
550 Sender IP address rejected (in reply to RCPT TO command)
Can you please advise how to fix this issue?
THX
Hi - some details would help! From what address, to what address, and the relevant portion of mail.log.
Before I publish my e-mail adress, why is that required for analysis?
Please note that this issue only occures since migration to Mail-in-a-Box, and that error message is pointing to Sender IP address.
Here’s the relevant content of /var/log/mail.log:
Jan 18 15:34:45 miab postfix/cleanup[478170]: 5144140418: replace: header Received: from [10.88.136.138] (unknown [193[7/1913$
10])??(using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)?? key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA2 from unknown[193.16.224.10]; from=<user@mydomain.com> to=<pflege@bkk-scheufelen.de> proto=ESMT
P helo=<[10.88.136.138]>: Received: from authenticated-user (miab.mydomain.com [202.61.194.19])??(using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)?? key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256)??(
No client certificate requested)??by miab.mydomain.com (Postfix) with ESMTPSA id 5144140418??for <pflege@bkk-scheufelen.de>; Thu, 18 Jan 2024 15:34:45 +0100 (CET)
Jan 18 15:34:46 miab postfix/smtp[478171]: looking for session smtp&bkk-scheufelen.de&mta1.gskv.de&62.245.133.41&&6BA5633A7986
5DA53BD8513A0C03125BAB0582CF286127D5DC21D1797474A3B4 in smtp cache
Jan 18 15:34:46 miab postfix/tlsmgr[393644]: lookup smtp session id=smtp&bkk-scheufelen.de&mta1.gskv.de&62.245.133.41&&6BA5633
A79865DA53BD8513A0C03125BAB0582CF286127D5DC21D1797474A3B4
Jan 18 15:34:46 miab postfix/smtp[478171]: save session smtp&bkk-scheufelen.de&mta1.gskv.de&62.245.133.41&&6BA5633A79865DA53BD
8513A0C03125BAB0582CF286127D5DC21D1797474A3B4 to smtp cache
Jan 18 15:34:46 miab postfix/tlsmgr[393644]: put smtp session id=smtp&bkk-scheufelen.de&mta1.gskv.de&62.245.133.41&&6BA5633A79
865DA53BD8513A0C03125BAB0582CF286127D5DC21D1797474A3B4 [data 2148 bytes]
Jan 18 15:34:46 miab postfix/tlsmgr[393644]: write smtp TLS cache entry smtp&bkk-scheufelen.de&mta1.gskv.de&62.245.133.41&&6BA
5633A79865DA53BD8513A0C03125BAB0582CF286127D5DC21D1797474A3B4: time=1705588486 [data 2148 bytes]
Jan 18 15:34:46 miab postfix/smtp[478171]: save session smtp&bkk-scheufelen.de&mta1.gskv.de&62.245.133.41&&6BA5633A79865DA53BD
8513A0C03125BAB0582CF286127D5DC21D1797474A3B4 to smtp cache
Jan 18 15:34:46 miab postfix/tlsmgr[393644]: put smtp session id=smtp&bkk-scheufelen.de&mta1.gskv.de&62.245.133.41&&6BA5633A79
865DA53BD8513A0C03125BAB0582CF286127D5DC21D1797474A3B4 [data 2149 bytes]
Jan 18 15:34:46 miab postfix/tlsmgr[393644]: write smtp TLS cache entry smtp&bkk-scheufelen.de&mta1.gskv.de&62.245.133.41&&6BA
5633A79865DA53BD8513A0C03125BAB0582CF286127D5DC21D1797474A3B4: time=1705588486 [data 2149 bytes]
Jan 18 15:34:46 miab postfix/smtp[478171]: 5144140418: to=<pflege@bkk-scheufelen.de>, relay=mta1.gskv.de[62.245.133.41]:25, de
lay=1.2, delays=0.4/0.19/0.55/0.09, dsn=5.0.0, status=bounced (host mta1.gskv.de[62.245.133.41] said: 550 Sender IP address re
jected (in reply to RCPT TO command))
Looks like your address is on a blacklist. Search the forum, there’s lots of discussion and some help about this problem.
That blacklist is meaningless. I am on it (my only blacklist) also and have no issues sending emails. To get off it you need to pay a fee to ‘prove’ you are not a spammer. It is almost a scam.
There are other issues to look into
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