E:Mails either not being delivered or taking extremly log time (1-2) days.

Okay guys another challenge. I have a few machines that are either not delivering e:mail messages or are taking forever to deliver them. They are running on deifferent servers so I know that is not the issue. Qustion is there a virus/worm/trojan horse that changes the address on the send command or is tagging onto a sent email causingit to slow down or get lost all together.
GregoryScullyAsked:
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adamdrayerConnect With a Mentor Commented:
Microsoft Exchange?  What Version?  Do you have access to the Exchange Message Tracker Tool?  or to any log files for Exchange or the firewall?  You need to trace the email messages from device to device until they leave your system.

Is it only outgoing? is all the email going to the same few domains like aol.com, etc..., which are very picky about their formatting?
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adamdrayerCommented:
Please explain your setup.
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GregoryScullyAuthor Commented:
We manage the IT for a number of small companies in a single office building. Some use the office building mail servers some use their own ISP. Three in particular have issues. Two are on the office building server the other on his own ISP. I have removed a LOT of stuff from their machines using Spy Sweeper, Cleaner and Hijackthis. I still have a message and get's delivered instantly the next time it's as if it's gone into never never land.
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adamdrayerCommented:

What type of mail servers are you running?  how many of them?  Are they open relays?  what is the networking infrastructure between them and the internet?  do you have firewall?  do they keep logs?  have you checked them?  have you researched MX record resolution problems?  Do you have a problem receiving mail, or just sending it?

You sound like you have a complicated network.  I wouldn't want to guess what it could be without knowing more.  Do these businesses all have seperate domains? how are they connected?
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GregoryScullyAuthor Commented:
Adamdrayer: You are correct it is a little comlicated. The machine with the ISP connection is on its own decdicated IP and firewall. One of the other two goes to a router and then directly to the mail server. The other one is on a domain (with five other machines they all work just fine) and then goes though the mail server. The reason I belive this to be a LOCAL issuse is because they are all so diffent but with the same type of problemand they all had virs/trojan issues
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GregoryScullyAuthor Commented:
Oh yes the mail server is just a whitebox PC running Microsoft
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GregoryScullyAuthor Commented:
It is only outgoing mail. The destinations are various and somtimes test to other machines on in the building fail. Some using the internal mail server some not. I'm going to run the the firewall log and get back to you.
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adamdrayerCommented:
ok
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GregoryScullyAuthor Commented:
AdamDrayer:

Thank you. Your suggestion helped me trace down a malfunctioning DNS on another server the mail server looked to for it's DNS.

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adamdrayerCommented:

Glad to hear you got it fixed!! Awesome!

Sorry I couldn't be more help, but I didn't really have enough to go on at the time.
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