Email not being received/possibly being perceived as spam?

Hi,

Our situation is that a couple of managers sent out 30 or so emails in very quick succession, all with the same subject heading, to customers as a personalized after sales courtesy call. These emails had delivery receipts but none appear to have been delivered. Individual emails are coming through and being sent out without issue and our spam filter is working inbound only(just checked with our provider). Our email (Exchange 2003 /server 2003)is sent out via smart host smtp.btconnect.com.  Is it likely that BT think this is spam? We were able to send out Christmas opening times last year in a similar way without any problems....any thoughts? Thanks..
Paul WelshAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

MadHatterAdminCommented:
Is your mail being forwarded thru an external smarthost?

I would try http://mxtoolbox.com/ to see if you're being blacklisted by any providers as they might be blocking you as spam.
0
Paul WelshAuthor Commented:
HI - yes we are going through bt smart host - smtp.btconnect.com - like I mentioned -all other emails are working fine - we have no problems at all with standard email send /receive and do not appear to be blacklisted. Its only when our guys try to send out a group of 30 or so emails, that this happens. There is a 0.5 mb attachment on 30 emails  -so 15mb or thereabouts  - but I understand BT limit is 20 or 25mb...
0
Paul WelshAuthor Commented:
If I change from using a smart host to DNS - would this be worse, i.e. look even more spammy and invite blacklisting?
0
MadHatterAdminCommented:
No, There's really no need to relay outbound mail thru an smtp smarthost. Using your DNS would be more beneficial because your email headers will contain your mail server info BUT if it's relayed externally it might be more recognizable as spam. General practice is using a smarthost for virus and spam filtering inbound, not usually outbound.  

Please follow best practices for exchange with dns and make sure you have a reverse look up and a couple other things in place or you WILL get flagged as spam.

Try this and test to see what happens.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
hecgomrecCommented:
Can you take one of those email addresses and send it with the same attachment?  can you without it?

Sometimes, is the attachment that is consider the dangerous and the filter will not allow it; Also the amount of email that can be send simultaneously can be an issue, this one you will have to discuss with your ISP (smtp smart host) to know/increase your limits.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Internet / Email Software

From novice to tech pro — start learning today.