This is not a SIMS question per se, but we have e-mail gurus here, 
and so with nothing else to do on a Friday I humbly blather before 
you :-)

There is a person with a sympatico acct whose e-mail name is 'mary.' 
(read "mary" "dot").

When she e-mails me from 'mary.' to my SIMS account ([EMAIL PROTECTED]) 
everything is fine. When she e-mails me from 'mary.' to my roadrunner 
address [EMAIL PROTECTED], she gets a bounce that simply reports 
'invalid user'. When she sends from a dotless address ('imary') to 
[EMAIL PROTECTED], it works fine. To further confound the issue, 
sending from mary. to a user at san.rr.com generates no bounce. To 
summarize:

[EMAIL PROTECTED] -> [EMAIL PROTECTED]            no problem
[EMAIL PROTECTED] -> [EMAIL PROTECTED]     bounce
[EMAIL PROTECTED] -> [EMAIL PROTECTED]     no problem
[EMAIL PROTECTED] -> [EMAIL PROTECTED]       no problem
all_other_e-mails  -> [EMAIL PROTECTED]     no problem (AFAICT)

Obviously there's something going on with nc.rr.com and dot 
usernames. I have an e-mail in to them, but I was wondering if any 
gurus here had some insight to any potential problems with '.' in 
usernames, as far as MTAs go. Is there any reason to filter and 
bounce them, for example?


Stefan Jeglinski

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