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Comments:
<0> what controls the mx record is iit part of sendmail postfix etc or bind or something else or just a bash script ?
<1> you define MX records in the DNS zone data
<0> that bind then eh
<0> ok in prime dns servers the mail come in on port 25 right not dns servers you can't change port at all . so it comes in on 25 gets sent to MX 0 mail.here.com whats ports it leaving on ? 25 still or 53 ...
<0> not/now
<1> why does the source port matter?
<0> well thats what I'm tring to figure out is it or no
<0> because if its leacing on 25 and you have port 25 blocked then my thought of what I want to do it borked :)
<0> leacing/leaving
<1> for SMTP, you must allow connections to port 25 on any SMTP servers the client will access
<1> or, less likely, the submission port
<0> ok so then when it gets to the dns prime and it goes to MX 0 mail.here.com its still on 25 right
<0> hmm so it tries 25 then 587 hmm
<0> ?
<1> no, servers will only send to port 25. clients may use a different port, if you've told them to
<0> well sendmail I have listening on 25,587 and 2025 (just picked that one)
<0> and there are sites that will redirest to 2025
<0> well it looks like I was right that when it goes into the dns on 25 its leaving on 25
<0> so what I was hoping to try wont work
<0> 567]: k2D4HvVD020457: to=<pine-count@docserver.cac.washington.edu>, delay=00:47:02, xdelay=00:03:09, mailer=esmtp, pri=210624, relay=docserver.cac
<0> .washington.edu. [140.142.32.171], dsn=4.0.0, stat=Deferred: Connection timed out with docserver.cac.washington.edu.
<0> what is this in maillog ?
<0> incoming or outgoing mail?
<0> confused cause it ntohing sent from here and I don't see what user its supposed to go to O.o
<2> outgoing, of course.
<0> what log do i look in to see incoming and failures
<2> uh.
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