Since V 9.407-3 emails with same to-recipient and cc-recipient will stuck in mail manager in SMTP Corrupt.

There is also one other issue that has not been mentioned or I have not seen.

If an email address is repeated it will also "get stuck" in the smtp corrupt.

I have an application that will combine email addresses from different accounts when sending an email

So if an address exists in the TO: CC: more than once, it will screw up the "count"

There is also one other issue that has not been mentioned or I have not seen.

If an email address is repeated it will also "get stuck" in the smtp corrupt.

I have an application that will combine email addresses from different accounts when sending an email

So if an address exists in the TO: CC: more than once, it will screw up the "count"

It's a new perspective on this matter but yes, still the same, two or more adresses that are the same in the same mail is screwing the counters up :-O

hm,

have tested this with my company... no problems... no mails in smtp-corrupt.. but only get the mail once.. (to and cc filled with my email-adress..)..

I don't think it happens with all mail servers and clients.  If you put the latest patches on your mail server, you might want to keep an eye on this.

Cheers - Bob

Running Exchange 2016 Cu3 at home, have no problems either, but if I use a SMTP test tool, aka. 3-party mailer (CRM/HR/ERP), things get stuck :-)

It's how the thing are delivered, Exchange handles duplicate emails in another way, and yes, I have Exchange sending the mails through my UTM :-)

Try this:

https://www.virtualobjectives.com.au/utilitiesprogs/sendsmtp.htm

Then write the same address in TO and CC and watch the "magic" :-)

zaphod said:

hm,

have tested this with my company... no problems... no mails in smtp-corrupt.. but only get the mail once.. (to and cc filled with my email-adress..)..

 

Same here, I think it's supposed to work that way, at least it did also like this with 9.404, Exchange "consolidates" the messages when receipient is the same :-)