We have limits for how many messages can be sent per hour and per day. Here are some examples: RankĤ51 Not currently accepting mail from your ip – psmtpĤ21 STRING (STRING) Unfortunately, some messages from 1.2.3.4 weren't sent. What kinds of error messages will I see if I am blocked?Īnti-spam error messages generally start with a number between 500 and 600, followed by a textual description of the problem. When email receivers see spam coming from your account or server, they may block you temporarily. Once an account or server has been compromised, large amounts of spam can be sent – all without your knowledge. Spammers steal user accounts and compromised mail servers using security exploits. However, it’s also important to look at your system’s security to make sure your computer and/or network have not been compromised by a spammer. If you’ve come to this page, you may be the victim of a “false positive”. Email receivers use sophisticated anti-spam mechanisms that sometimes ensnare legitimate email traffic.
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