Can you telnet to the port and do raw SMTP commands with it ?
Is there any odd filtering going on ?
I ask about odd filtering, because in my past job, I worked for $LARGE_INTERNET_SECURITY_COMPANY and I had to debug a problem with logging in where our product's SMTP state engine didn't correctly reset itself under a very specific condition (based on what the encrypted password used to log into the SMTP server was). Very tricky, stupid thing. See if there's consistency in how login/pw are transported (plaintext, base-64, or other encryption methods -- find the RFC if you need info on that)
No strange filtering, and no fixup-protocol on the pix.
Thepasswd / smtp-auth start with kerberos, then move to ntlm. Thunderbird starts with kerberso, so the negotiation works for, say, 99 percent of my users.--------------------------------- "You bring the weasel, I'll bring the whiskey." - kellnerin[ Parent ]
Where are they sending from? Is it a wireless link?
A couple years back, while doing $classified for $company, I had to write a custom e-mail app. It had issues connecting using wi-fi at Starbucks, but not at Panera. It turned out that the mail server trusted one site, but not the other, so different SMTP logons were required. Earth First! (We can strip mine the rest later.)
Oooh, unicode! Have you looked to see if the user/server are using the same unicode pages? I've been bitten by that one. Earth First! (We can strip mine the rest later.)[ Parent ]
Yet another new account created seconds later with the same defaults worked.
??--------------------------------- "You bring the weasel, I'll bring the whiskey." - kellnerin[ Parent ]
Regardless, if it's happening to Thunderbird and Mac Mail, and no where else, they'll likely tell you to use Outlook.
Years pass, things change, you end up living in Kansas. But the bag of dicks never leaves your side... - blixco--top hat--[ Parent ]
So, we've narrowed it to: smtp auth is working. The error happens post-auth, it turns out. The client auths, all is OK, then the client says
mail from:user@domain.com
and the client is told 454: tls ain't available right now. On mozilla mail based clients, this causes a quit.--------------------------------- "You bring the weasel, I'll bring the whiskey." - kellnerin[ Parent ]
I'm so lonely. And so cold right now.
Best if done from same machine with same account. The look at the two traces and see what's different. (Pretty easy to do this).[ Parent ]
Get this: anytime I say mail from:certainuser@mydomain.com, it fails. Unless the certainuser auths as me.
???
Microsoft tells me, we have a very tiny bug. But they won't give me the details yet.--------------------------------- "You bring the weasel, I'll bring the whiskey." - kellnerin[ Parent ]
1 vote - 100 %
1 vote - 100 %
