Answer:
ok but give me brainliest also plz
Explanation:
Joseph Henry in about 1835. He is American and he made something called a relay.
It means you cant send email since port 25 id reserved for SMTP protocol
Answer:
filter
Explanation:
Some email programs let you use a filter to move incoming mail to a specific folder or to delete it automatically based on the content of the message.
The filter performs this role by either automatically deleting or moving to another location.
Most messages that are moved or deleted are unsolicited emails or spam messages.
Filtering of your mails helps so you ou can manage your incoming mail using filters to send email to a label, or archive, delete, star, or automatically forward your mail.
This is a way of organising your correspondence.
