[nycbug-talk] change sendmail port from 25 to something else

lists at experiencedstudents.com lists
Tue Nov 2 22:42:32 EST 2004

Jerry B. Altzman wrote:

> wups, I sent this to sender instead of to list; my bad.
> -------- Original Message --------
> Mikel King wrote:
>> Jerry B. Altzman wrote:
>>> Mikel King wrote:
>>>> I know somewhere down the line I'll regret this but...Assuming that you are
running FreeBSD you should be able to do the following;
>>> Very nice -- however, here's the question.
>>> If you're using sendmail as your mail submission agent (to thence send out
mail) all well and good.
>>> If you're trying to receive mail on it from, it ain't gonna work right.
>> Right you are, but if Optimumonline is indeed blocking inbound port 25 then
it really isn't an issue.
> Indeed, they block that and port 80 too, last time I checked.
> The idea, and I support it, is to prevent people with
> grossly-misconfigured sendmails at the end of a broadband line from
> being 0wnz0r3d and used as spam-reflectors/magnifiers.
>>> Why can't he just use the smtp servers from optimum online?
>> Yes why not? I suppose if one wanted to have their own sasl enabled smtp
engine for their treo600 or some other silly pda type dev. That would be reason
enough, especialy if the ISP does block inbound 25. If this were the reason then
I suppose point two wouldn't matter that much. But of course this is all just
> If he's using secure stuff, it's not on port 25 anyway, so nothing lost.
> But as Trish pointed out, many places blacklist direct submissions from
> dynamic IP blocks (and just about everything in 24/8 is someone's
> broadband :-) he might find less mail getting out than he hoped.

Thanx for your replies guys, i will try your suggestions on this weekend.

Just to clear things up,  as some of you might noticed i am using my domain name
to send and receive emails. I am not hosting it on my  *home* box
insteed i got a hosting for it.
The  thing is some of my friends accept emails from *known* hosts and drop the
rest with out even sorting good/bad.
also i  want to send my emails using smtp because i recently  subscribed to many
mailing lists and dont want to use web interface to read and reply.

and then again as someone here noticed (i think it was  Pete) i want to have
some fun with freebsd. i am moving from WIndows to fbsd slowly ;) Well if i
wanted an easy life ;) i would stay with windows and use optimum's smtp servers
thanx again

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