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Hi ****,
Does this help?
"Our MTA (Mail Transfer Agent) is designed especially for subscribers who
can't make use of another MTA via their outlook client. Port 25 is open to
any MTA on the internet to whoever grants access and to an HTML based mail
system. So we don't force anyone to make use of the system.
A lot of subscribers are using our GPRS outgoing IP (default) to send mail
via their MTA's and subsequently these IP's are blocked by SPAM detection
hosts as a lot of virus and similar e-mail are outbound on those IP. Their
mail could get blocked by the destination server. Hence the reason for MTN
providing SPAM detection MTA"
Kind regards,
********
I use my own SMTP because MTN's blocks half my email. I have complained but this has fallen on deaf ears...