Unfortunately, the targeted sending of spam mails is a major problem among cloud providers. To counteract this as best as possible, we at SellCloud block outgoing traffic on ports 25 and 465 by default on all cloud servers. This precaution is widespread among cloud providers and helps prevent misuse of the ports.
Alternatively, port 587 can also be used to send e-mails via external service providers/mail services. Port 587 is not blocked and no limit request is required to use it.
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