Hi,
I'm comparing the hops between exchange2013 and exchange2010. I notice Exchange 2013 has an extra hop when sending out emails. Please note that exchange2013 and exchange2010 are not part of the same Active Directory. They are completely separate companies.
The reason why I'm asking about the extra hop is I notice ex2013 first email takes about 1 min to get delivered externally and subsequent email sends are instant. If I haven't emailed for a while (eg. 10mins), the first email takes about 1min to get delivered
again externally and subsequent emails are instant. I don't notice this delay with Exchange 2010.
Exchange 2013 why is there an extra hop (hop #2, Microsoft SMTP Server (TLS))? Could the TLS be the reason of the delay because it is trying to talk to telus smtp via TLS but telus doesn't use TLS and exchange2013 falls back to smtp without TLS for email send?:
Hop | Delay | from | by | with | time (UTC) |
1 | * | ex2013svr.corp.contoso1.com | ex2013svr.corp.contoso1.com | mapi | 1/17/2014 5:22:07 PM |
2 | 0 seconds | ex2013svr.corp.contoso1.com | ex2013svr.corp.contoso1.com | Microsoft SMTP Server (TLS) | 1/17/2014 5:22:07 PM |
3 | 39 seconds | ex2013svr.corp.contoso1.com 206.x.x.x | cmta1.telus.net | TELUS | 1/17/2014 5:22:46 PM |
4 | 1 Second | cmta1.telus.net 209.171.16.74 | BAY0-MC2-F44.Bay0.hotmail.com | Microsoft SMTPSVC(6.0.3790.4900) | 1/17/2014 5:22:47 PM |
Exchange 2010 doesn't have the 'Microsoft SMTP Server (TLS)' hop:
Hop | Delay | from | by | with | time (UTC) |
1 | * | ex2010svr.corp.contoso2.com | ex2010svr.corp.contoso2.com | mapi | 1/17/2014 5:20:48 PM |
2 | 0 seconds | ex2010svr.corp.contoso2.com 98.x.x.x | skaro.stargate.ca | ESMTP | 1/17/2014 5:20:48 PM |
3 | 1 Second | skaro.stargate.ca 98.143.80.200 | SNT0-MC2-F53.Snt0.hotmail.com | Microsoft SMTPSVC(6.0.3790.4900) | 1/17/2014 5:20:49 PM |